UB4 postcode district: Hillingdon and around

UB4 is a postcode district in England, with 704 postcodes in use in 3 sectors. It has postcodes in Hillingdon and Ealing. Its council is Hillingdon.

Postcodes in use
704
Sectors
3
Council
Hillingdon
Places
2 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in UB4, by flood risk

Map of every postcode in UB4, by flood risk Of the 704 postcodes in UB4 that ONS places, 18 have a home or business at high risk, 3 are at medium risk at worst, 35 are at low risk at worst, 7 are at very low risk only and 641 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 12 postcodes at high or medium risk. 2 postcodes lie beyond the edge and are listed under the map. Places named: Yeading, Belmore. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. UB4 0AA: not on the flood risk listUB4 0AB: not on the flood risk listUB4 0AD: not on the flood risk listUB4 0AE: not on the flood risk listUB4 0AF: not on the flood risk listUB4 0AG: not on the flood risk listUB4 0AH: not on the flood risk listUB4 0AJ: not on the flood risk listUB4 0AL: not on the flood risk listUB4 0AN: not on the flood risk listUB4 0AP: not on the flood risk listUB4 0AQ: not on the flood risk listUB4 0AR: not on the flood risk listUB4 0AS: not on the flood risk listUB4 0AT: not on the flood risk listUB4 0AU: not on the flood risk listUB4 0AW: not on the flood risk listUB4 0AX: not on the flood risk listUB4 0AY: not on the flood risk listUB4 0AZ: not on the flood risk listUB4 0BA: not on the flood risk listUB4 0BB: not on the flood risk listUB4 0BD: not on the flood risk listUB4 0BE: not on the flood risk listUB4 0BG: not on the flood risk listUB4 0BJ: not on the flood risk listUB4 0BL: not on the flood risk listUB4 0BN: not on the flood risk listUB4 0BQ: not on the flood risk listUB4 0BS: not on the flood risk listUB4 0BT: not on the flood risk listUB4 0BU: not on the flood risk listUB4 0BW: not on the flood risk listUB4 0BX: not on the flood risk listUB4 0BY: not on the flood risk listUB4 0BZ: not on the flood risk listUB4 0DA: not on the flood risk listUB4 0DB: not on the flood risk listUB4 0DE: not on the flood risk listUB4 0DF: not on the flood risk listUB4 0DJ: not on the flood risk listUB4 0DL: not on the flood risk listUB4 0DN: not on the flood risk listUB4 0DP: not on the flood risk listUB4 0DQ: not on the flood risk listUB4 0DR: not on the flood risk listUB4 0DS: not on the flood risk listUB4 0DU: not on the flood risk listUB4 0DW: not on the flood risk listUB4 0DX: not on the flood risk listUB4 0DY: not on the flood risk listUB4 0DZ: not on the flood risk listUB4 0EA: not on the flood risk listUB4 0EB: not on the flood risk listUB4 0ED: not on the flood risk listUB4 0EE: not on the flood risk listUB4 0EH: not on the flood risk listUB4 0EJ: not on the flood risk listUB4 0EL: not on the flood risk listUB4 0EN: not on the flood risk listUB4 0EP: not on the flood risk listUB4 0EW: not on the flood risk listUB4 0EX: not on the flood risk listUB4 0EY: not on the flood risk listUB4 0EZ: not on the flood risk listUB4 0FE: not on the flood risk listUB4 0HD: not on the flood risk listUB4 0HF: not on the flood risk listUB4 0HG: not on the flood risk listUB4 0HH: not on the flood risk listUB4 0HJ: not on the flood risk listUB4 0HL: not on the flood risk listUB4 0HN: not on the flood risk listUB4 0HP: not on the flood risk listUB4 0HQ: not on the flood risk listUB4 0HR: not on the flood risk listUB4 0HS: not on the flood risk listUB4 0HT: not on the flood risk listUB4 0HU: not on the flood risk listUB4 0HW: not on the flood risk listUB4 0HX: not on the flood risk listUB4 0HY: not on the flood risk listUB4 0HZ: not on the flood risk listUB4 0JA: not on the flood risk listUB4 0JE: not on the flood risk listUB4 0JG: not on the flood risk listUB4 0JH: not on the flood risk listUB4 0JN: not on the flood risk listUB4 0JP: not on the flood risk listUB4 0JQ: not on the flood risk listUB4 0JR: not on the flood risk listUB4 0LD: not on the flood risk listUB4 0LE: not on the flood risk listUB4 0LG: not on the flood risk listUB4 0LP: not on the flood risk listUB4 0LT: not on the flood risk listUB4 0NF: not on the flood risk listUB4 0NT: not on the flood risk listUB4 0NW: not on the flood risk listUB4 0NX: not on the flood risk listUB4 0NZ: not on the flood risk listUB4 0PD: not on the flood risk listUB4 0PE: not on the flood risk listUB4 0PF: not on the flood risk listUB4 0PG: not on the flood risk listUB4 0PH: not on the flood risk listUB4 0PJ: not on the flood risk listUB4 0PN: not on the flood risk listUB4 0PP: not on the flood risk listUB4 0PQ: not on the flood risk listUB4 0PR: not on the flood risk listUB4 0PX: not on the flood risk listUB4 0PY: not on the flood risk listUB4 0PZ: not on the flood risk listUB4 0QA: not on the flood risk listUB4 0QB: not on the flood risk listUB4 0QD: not on the flood risk listUB4 0QE: not on the flood risk listUB4 0QG: not on the flood risk listUB4 0QH: not on the flood risk listUB4 0QJ: not on the flood risk listUB4 0QL: not on the flood risk listUB4 0QN: not on the flood risk listUB4 0QP: not on the flood risk listUB4 0QQ: not on the flood risk listUB4 0QR: not on the flood risk listUB4 0QS: not on the flood risk listUB4 0QT: not on the flood risk listUB4 0QU: not on the flood risk listUB4 0QW: not on the flood risk listUB4 0QX: not on the flood risk listUB4 0QY: not on the flood risk listUB4 0QZ: not on the flood risk listUB4 0RA: not on the flood risk listUB4 0RB: not on the flood risk listUB4 0RD: not on the flood risk listUB4 0RE: not on the flood risk listUB4 0RG: not on the flood risk listUB4 0RH: not on the flood risk listUB4 0RJ: not on the flood risk listUB4 0RL: not on the flood risk listUB4 0RP: not on the flood risk listUB4 0RR: not on the flood risk listUB4 0RS: not on the flood risk listUB4 0RU: not on the flood risk listUB4 0RW: not on the flood risk listUB4 0RX: not on the flood risk listUB4 0RY: not on the flood risk listUB4 0RZ: not on the flood risk listUB4 0SA: not on the flood risk listUB4 0SB: not on the flood risk listUB4 0SD: not on the flood risk listUB4 0SE: not on the flood risk listUB4 0SG: not on the flood risk listUB4 0SL: not on the flood risk listUB4 0SN: not on the flood risk listUB4 0SW: not on the flood risk listUB4 0TA: not on the flood risk listUB4 0TD: not on the flood risk listUB4 0TE: not on the flood risk listUB4 0TH: not on the flood risk listUB4 0TP: not on the flood risk listUB4 0TU: not on the flood risk listUB4 0TW: not on the flood risk listUB4 0UP: not on the flood risk listUB4 0XA: not on the flood risk listUB4 0XB: not on the flood risk listUB4 0XD: not on the flood risk listUB4 0XE: not on the flood risk listUB4 0XF: not on the flood risk listUB4 0YN: not on the flood risk listUB4 8AA: not on the flood risk listUB4 8AB: not on the flood risk listUB4 8AD: not on the flood risk listUB4 8AE: not on the flood risk listUB4 8AF: not on the flood risk listUB4 8AG: not on the flood risk listUB4 8AH: not on the flood risk listUB4 8AJ: not on the flood risk listUB4 8AN: not on the flood risk listUB4 8AP: not on the flood risk listUB4 8AQ: not on the flood risk listUB4 8AR: not on the flood risk listUB4 8AS: not on the flood risk listUB4 8AT: not on the flood risk listUB4 8AU: not on the flood risk listUB4 8AW: not on the flood risk listUB4 8AX: not on the flood risk listUB4 8AY: not on the flood risk listUB4 8BA: not on the flood risk listUB4 8BB: not on the flood risk listUB4 8BD: not on the flood risk listUB4 8BE: not on the flood risk listUB4 8BG: not on the flood risk listUB4 8BH: not on the flood risk listUB4 8BJ: not on the flood risk listUB4 8BL: not on the flood risk listUB4 8BN: not on the flood risk listUB4 8BP: not on the flood risk listUB4 8BQ: not on the flood risk listUB4 8BS: not on the flood risk listUB4 8BT: not on the flood risk listUB4 8BU: not on the flood risk listUB4 8BW: not on the flood risk listUB4 8BX: not on the flood risk listUB4 8BY: not on the flood risk listUB4 8DA: not on the flood risk listUB4 8DB: not on the flood risk listUB4 8DE: not on the flood risk listUB4 8DG: not on the flood risk listUB4 8DH: not on the flood risk listUB4 8DJ: not on the flood risk listUB4 8DL: not on the flood risk listUB4 8DN: not on the flood risk listUB4 8DP: not on the flood risk listUB4 8DQ: not on the flood risk listUB4 8DR: not on the flood risk listUB4 8DS: not on the flood risk listUB4 8DU: not on the flood risk listUB4 8DW: not on the flood risk listUB4 8DX: not on the flood risk listUB4 8DY: not on the flood risk listUB4 8DZ: not on the flood risk listUB4 8EA: not on the flood risk listUB4 8EB: not on the flood risk listUB4 8EH: not on the flood risk listUB4 8EJ: not on the flood risk listUB4 8EL: not on the flood risk listUB4 8EN: not on the flood risk listUB4 8EP: not on the flood risk listUB4 8ER: not on the flood risk listUB4 8ES: not on the flood risk listUB4 8ET: not on the flood risk listUB4 8EU: not on the flood risk listUB4 8EW: not on the flood risk listUB4 8EX: not on the flood risk listUB4 8EY: not on the flood risk listUB4 8EZ: not on the flood risk listUB4 8FD: not on the flood risk listUB4 8FE: not on the flood risk listUB4 8FF: not on the flood risk listUB4 8FG: not on the flood risk listUB4 8FJ: not on the flood risk listUB4 8FL: not on the flood risk listUB4 8FN: not on the flood risk listUB4 8FP: not on the flood risk listUB4 8FQ: not on the flood risk listUB4 8FR: not on the flood risk listUB4 8FS: not on the flood risk listUB4 8FT: not on the flood risk listUB4 8FW: not on the flood risk listUB4 8FX: not on the flood risk listUB4 8HA: not on the flood risk listUB4 8HB: not on the flood risk listUB4 8HD: not on the flood risk listUB4 8HE: not on the flood risk listUB4 8HF: not on the flood risk listUB4 8HG: not on the flood risk listUB4 8HL: not on the flood risk listUB4 8HN: not on the flood risk listUB4 8HQ: not on the flood risk listUB4 8HR: not on the flood risk listUB4 8HS: not on the flood risk listUB4 8HT: not on the flood risk listUB4 8HU: not on the flood risk listUB4 8HW: not on the flood risk listUB4 8HX: not on the flood risk listUB4 8HY: not on the flood risk listUB4 8HZ: not on the flood risk listUB4 8JA: not on the flood risk listUB4 8JB: not on the flood risk listUB4 8JE: not on the flood risk listUB4 8JF: not on the flood risk listUB4 8JG: not on the flood risk listUB4 8JJ: not on the flood risk listUB4 8JL: not on the flood risk listUB4 8JN: not on the flood risk listUB4 8JP: not on the flood risk listUB4 8JR: not on the flood risk listUB4 8JS: not on the flood risk listUB4 8JU: not on the flood risk listUB4 8JW: not on the flood risk listUB4 8JX: not on the flood risk listUB4 8JY: not on the flood risk listUB4 8JZ: not on the flood risk listUB4 8LA: not on the flood risk listUB4 8LB: not on the flood risk listUB4 8LD: not on the flood risk listUB4 8LE: not on the flood risk listUB4 8LF: not on the flood risk listUB4 8LG: not on the flood risk listUB4 8LH: not on the flood risk listUB4 8LJ: not on the flood risk listUB4 8LL: not on the flood risk listUB4 8LN: not on the flood risk listUB4 8LP: not on the flood risk listUB4 8LQ: not on the flood risk listUB4 8LR: not on the flood risk listUB4 8LS: not on the flood risk listUB4 8LT: not on the flood risk listUB4 8LU: not on the flood risk listUB4 8LW: not on the flood risk listUB4 8LX: not on the flood risk listUB4 8LY: not on the flood risk listUB4 8LZ: not on the flood risk listUB4 8NA: not on the flood risk listUB4 8NB: not on the flood risk listUB4 8ND: not on the flood risk listUB4 8NE: not on the flood risk listUB4 8NF: not on the flood risk listUB4 8NG: not on the flood risk listUB4 8NH: not on the flood risk listUB4 8NL: not on the flood risk listUB4 8NN: not on the flood risk listUB4 8NP: not on the flood risk listUB4 8NQ: not on the flood risk listUB4 8NR: not on the flood risk listUB4 8NS: not on the flood risk listUB4 8NT: not on the flood risk listUB4 8NU: not on the flood risk listUB4 8NW: not on the flood risk listUB4 8NX: not on the flood risk listUB4 8NY: not on the flood risk listUB4 8NZ: not on the flood risk listUB4 8PB: not on the flood risk listUB4 8PD: not on the flood risk listUB4 8PE: not on the flood risk listUB4 8PF: not on the flood risk listUB4 8PG: not on the flood risk listUB4 8PH: not on the flood risk listUB4 8PJ: not on the flood risk listUB4 8PL: not on the flood risk listUB4 8PN: not on the flood risk listUB4 8PP: not on the flood risk listUB4 8PQ: not on the flood risk listUB4 8PR: not on the flood risk listUB4 8PS: not on the flood risk listUB4 8PT: not on the flood risk listUB4 8PU: not on the flood risk listUB4 8PW: not on the flood risk listUB4 8PX: not on the flood risk listUB4 8PY: not on the flood risk listUB4 8PZ: not on the flood risk listUB4 8QA: not on the flood risk listUB4 8QB: not on the flood risk listUB4 8QD: not on the flood risk listUB4 8QE: not on the flood risk listUB4 8QF: not on the flood risk listUB4 8QG: not on the flood risk listUB4 8QH: not on the flood risk listUB4 8QJ: not on the flood risk listUB4 8QL: not on the flood risk listUB4 8QN: not on the flood risk listUB4 8QP: not on the flood risk listUB4 8QQ: not on the flood risk listUB4 8QR: not on the flood risk listUB4 8QS: not on the flood risk listUB4 8QT: not on the flood risk listUB4 8QU: not on the flood risk listUB4 8QW: not on the flood risk listUB4 8QX: not on the flood risk listUB4 8QY: not on the flood risk listUB4 8QZ: not on the flood risk listUB4 8RA: not on the flood risk listUB4 8RB: not on the flood risk listUB4 8RD: not on the flood risk listUB4 8RE: not on the flood risk listUB4 8RF: not on the flood risk listUB4 8RG: not on the flood risk listUB4 8RH: not on the flood risk listUB4 8RJ: not on the flood risk listUB4 8RL: not on the flood risk listUB4 8RN: not on the flood risk listUB4 8RP: not on the flood risk listUB4 8RQ: not on the flood risk listUB4 8RR: not on the flood risk listUB4 8RS: not on the flood risk listUB4 8RT: not on the flood risk listUB4 8RU: not on the flood risk listUB4 8RW: not on the flood risk listUB4 8RX: not on the flood risk listUB4 8RY: not on the flood risk listUB4 8RZ: not on the flood risk listUB4 8SA: not on the flood risk listUB4 8SB: not on the flood risk listUB4 8SD: not on the flood risk listUB4 8SE: not on the flood risk listUB4 8SF: not on the flood risk listUB4 8SG: not on the flood risk listUB4 8SH: not on the flood risk listUB4 8SJ: not on the flood risk listUB4 8SL: not on the flood risk listUB4 8SN: not on the flood risk listUB4 8SP: not on the flood risk listUB4 8SQ: not on the flood risk listUB4 8SR: not on the flood risk listUB4 8SS: not on the flood risk listUB4 8ST: not on the flood risk listUB4 8SU: not on the flood risk listUB4 8SW: not on the flood risk listUB4 8SX: not on the flood risk listUB4 8SY: not on the flood risk listUB4 8TA: not on the flood risk listUB4 8TN: not on the flood risk listUB4 9AF: not on the flood risk listUB4 9AN: not on the flood risk listUB4 9AP: not on the flood risk listUB4 9AR: not on the flood risk listUB4 9AS: not on the flood risk listUB4 9AW: not on the flood risk listUB4 9AZ: not on the flood risk listUB4 9BA: not on the flood risk listUB4 9BD: not on the flood risk listUB4 9BE: not on the flood risk listUB4 9BG: not on the flood risk listUB4 9BH: not on the flood risk listUB4 9BJ: not on the flood risk listUB4 9BL: not on the flood risk listUB4 9BN: not on the flood risk listUB4 9BS: not on the flood risk listUB4 9BT: not on the flood risk listUB4 9BU: not on the flood risk listUB4 9BX: not on the flood risk listUB4 9BY: not on the flood risk listUB4 9BZ: not on the flood risk listUB4 9DA: not on the flood risk listUB4 9DB: not on the flood risk listUB4 9DD: not on the flood risk listUB4 9DF: not on the flood risk listUB4 9DH: not on the flood risk listUB4 9DJ: not on the flood risk listUB4 9DL: not on the flood risk listUB4 9DN: not on the flood risk listUB4 9DP: not on the flood risk listUB4 9DQ: not on the flood risk listUB4 9DR: not on the flood risk listUB4 9DS: not on the flood risk listUB4 9DT: not on the flood risk listUB4 9DU: not on the flood risk listUB4 9DW: not on the flood risk listUB4 9DX: not on the flood risk listUB4 9DY: not on the flood risk listUB4 9DZ: not on the flood risk listUB4 9EA: not on the flood risk listUB4 9EB: not on the flood risk listUB4 9ED: not on the flood risk listUB4 9EE: not on the flood risk listUB4 9EF: not on the flood risk listUB4 9EG: not on the flood risk listUB4 9EH: not on the flood risk listUB4 9EQ: not on the flood risk listUB4 9ES: not on the flood risk listUB4 9ET: not on the flood risk listUB4 9EU: not on the flood risk listUB4 9EW: not on the flood risk listUB4 9EX: not on the flood risk listUB4 9EY: not on the flood risk listUB4 9FA: not on the flood risk listUB4 9FB: not on the flood risk listUB4 9FD: not on the flood risk listUB4 9FE: not on the flood risk listUB4 9HA: not on the flood risk listUB4 9HB: not on the flood risk listUB4 9HD: not on the flood risk listUB4 9HE: not on the flood risk listUB4 9HF: not on the flood risk listUB4 9HG: not on the flood risk listUB4 9HH: not on the flood risk listUB4 9HJ: not on the flood risk listUB4 9HL: not on the flood risk listUB4 9HQ: not on the flood risk listUB4 9HR: not on the flood risk listUB4 9HS: not on the flood risk listUB4 9HT: not on the flood risk listUB4 9HU: not on the flood risk listUB4 9HX: not on the flood risk listUB4 9HY: not on the flood risk listUB4 9HZ: not on the flood risk listUB4 9JA: not on the flood risk listUB4 9JB: not on the flood risk listUB4 9JD: not on the flood risk listUB4 9JF: not on the flood risk listUB4 9JG: not on the flood risk listUB4 9JH: not on the flood risk listUB4 9JJ: not on the flood risk listUB4 9JL: not on the flood risk listUB4 9JP: not on the flood risk listUB4 9JS: not on the flood risk listUB4 9JT: not on the flood risk listUB4 9JU: not on the flood risk listUB4 9JW: not on the flood risk listUB4 9JX: not on the flood risk listUB4 9JY: not on the flood risk listUB4 9JZ: not on the flood risk listUB4 9LA: not on the flood risk listUB4 9LB: not on the flood risk listUB4 9LD: not on the flood risk listUB4 9LE: not on the flood risk listUB4 9LF: not on the flood risk listUB4 9LG: not on the flood risk listUB4 9LH: not on the flood risk listUB4 9LJ: not on the flood risk listUB4 9LN: not on the flood risk listUB4 9LP: not on the flood risk listUB4 9LQ: not on the flood risk listUB4 9LR: not on the flood risk listUB4 9LS: not on the flood risk listUB4 9LT: not on the flood risk listUB4 9LU: not on the flood risk listUB4 9LW: not on the flood risk listUB4 9LX: not on the flood risk listUB4 9LY: not on the flood risk listUB4 9LZ: not on the flood risk listUB4 9NB: not on the flood risk listUB4 9ND: not on the flood risk listUB4 9NE: not on the flood risk listUB4 9NF: not on the flood risk listUB4 9NG: not on the flood risk listUB4 9NH: not on the flood risk listUB4 9NJ: not on the flood risk listUB4 9NL: not on the flood risk listUB4 9NN: not on the flood risk listUB4 9NP: not on the flood risk listUB4 9NQ: not on the flood risk listUB4 9NR: not on the flood risk listUB4 9NS: not on the flood risk listUB4 9NT: not on the flood risk listUB4 9NW: not on the flood risk listUB4 9PA: not on the flood risk listUB4 9PD: not on the flood risk listUB4 9PE: not on the flood risk listUB4 9PF: not on the flood risk listUB4 9PG: not on the flood risk listUB4 9PJ: not on the flood risk listUB4 9PL: not on the flood risk listUB4 9PN: not on the flood risk listUB4 9PP: not on the flood risk listUB4 9PR: not on the flood risk listUB4 9PS: not on the flood risk listUB4 9PT: not on the flood risk listUB4 9PU: not on the flood risk listUB4 9PW: not on the flood risk listUB4 9PY: not on the flood risk listUB4 9PZ: not on the flood risk listUB4 9QA: not on the flood risk listUB4 9QB: not on the flood risk listUB4 9QG: not on the flood risk listUB4 9QH: not on the flood risk listUB4 9QN: not on the flood risk listUB4 9QP: not on the flood risk listUB4 9QQ: not on the flood risk listUB4 9QR: not on the flood risk listUB4 9QS: not on the flood risk listUB4 9QT: not on the flood risk listUB4 9QW: not on the flood risk listUB4 9RB: not on the flood risk listUB4 9RD: not on the flood risk listUB4 9RE: not on the flood risk listUB4 9RF: not on the flood risk listUB4 9RG: not on the flood risk listUB4 9RH: not on the flood risk listUB4 9RJ: not on the flood risk listUB4 9RL: not on the flood risk listUB4 9RN: not on the flood risk listUB4 9RQ: not on the flood risk listUB4 9RS: not on the flood risk listUB4 9RT: not on the flood risk listUB4 9RU: not on the flood risk listUB4 9RW: not on the flood risk listUB4 9RX: not on the flood risk listUB4 9SN: not on the flood risk listUB4 9SP: not on the flood risk listUB4 9SQ: not on the flood risk listUB4 9SR: not on the flood risk listUB4 9SS: not on the flood risk listUB4 9ST: not on the flood risk listUB4 9SU: not on the flood risk listUB4 9SW: not on the flood risk listUB4 9SX: not on the flood risk listUB4 9SY: not on the flood risk listUB4 9SZ: not on the flood risk listUB4 9TB: not on the flood risk listUB4 9TD: not on the flood risk listUB4 9TE: not on the flood risk listUB4 9TF: not on the flood risk listUB4 9TG: not on the flood risk listUB4 9TH: not on the flood risk listUB4 9TJ: not on the flood risk listUB4 9TL: not on the flood risk listUB4 9TN: not on the flood risk listUB4 9TP: not on the flood risk listUB4 9TQ: not on the flood risk listUB4 9TR: not on the flood risk listUB4 9TS: not on the flood risk listUB4 9TT: not on the flood risk listUB4 9TU: not on the flood risk listUB4 9TW: not on the flood risk listUB4 9TX: not on the flood risk listUB4 9TY: not on the flood risk listUB4 9TZ: not on the flood risk listUB4 9UA: not on the flood risk listUB4 9UB: not on the flood risk listUB4 9UD: not on the flood risk listUB4 9UE: not on the flood risk listUB4 9UF: not on the flood risk listUB4 9UG: not on the flood risk listUB4 9UH: not on the flood risk listUB4 9UJ: not on the flood risk listUB4 9UL: not on the flood risk listUB4 9UN: not on the flood risk listUB4 9UP: not on the flood risk listUB4 9UQ: not on the flood risk listUB4 9UR: not on the flood risk listUB4 9US: not on the flood risk listUB4 9UT: not on the flood risk listUB4 9UU: not on the flood risk listUB4 9UW: not on the flood risk listUB4 9UX: not on the flood risk listUB4 9YB: not on the flood risk listUB4 9YD: not on the flood risk listUB4 9YE: not on the flood risk listUB4 9YF: not on the flood risk listUB4 9YG: not on the flood risk listUB4 9YQ: not on the flood risk listUB4 0JJ: very low flood risk onlyUB4 0JW: very low flood risk onlyUB4 0NU: very low flood risk onlyUB4 0NY: very low flood risk onlyUB4 8BZ: very low flood risk onlyUB4 9AL: very low flood risk onlyUB4 9TA: very low flood risk onlyUB4 0DG: low flood risk at worstUB4 0ER: low flood risk at worstUB4 0ES: low flood risk at worstUB4 0HA: low flood risk at worstUB4 0LY: low flood risk at worstUB4 0LZ: low flood risk at worstUB4 0NA: low flood risk at worstUB4 0NB: low flood risk at worstUB4 0ND: low flood risk at worstUB4 0NH: low flood risk at worstUB4 0NJ: low flood risk at worstUB4 0NL: low flood risk at worstUB4 0NN: low flood risk at worstUB4 0NP: low flood risk at worstUB4 0NQ: low flood risk at worstUB4 0NR: low flood risk at worstUB4 0NS: low flood risk at worstUB4 0PA: low flood risk at worstUB4 0PB: low flood risk at worstUB4 0PL: low flood risk at worstUB4 0PW: low flood risk at worstUB4 0XP: low flood risk at worstUB4 0XS: low flood risk at worstUB4 0XU: low flood risk at worstUB4 8NJ: low flood risk at worstUB4 9AD: low flood risk at worstUB4 9AT: low flood risk at worstUB4 9AU: low flood risk at worstUB4 9AX: low flood risk at worstUB4 9AY: low flood risk at worstUB4 9BB: low flood risk at worstUB4 9DG: low flood risk at worstUB4 9JE: low flood risk at worstUB4 0EF: medium flood risk at worstUB4 9AE: medium flood risk at worstUB4 9AJ: medium flood risk at worstUB4 0BH: high flood riskUB4 0BP: high flood riskUB4 0EG: high flood riskUB4 0EQ: high flood riskUB4 0JZ: high flood riskUB4 0NG: high flood riskUB4 8DD: high flood riskUB4 9AA: high flood riskUB4 9AG: high flood riskUB4 9AH: high flood riskUB4 9AQ: high flood riskUB4 9EL: high flood riskUB4 9EN: high flood riskUB4 9EP: high flood riskUB4 9ER: high flood riskUB4 9HP: high flood riskUB4 9UZ: high flood risk YeadingBelmore 12 postcodes at high or medium risk, outlined: this goes to UB4 9AQ, the one with most homes and businesses at high risk12 postcodes at high or medium risk Map of every postcode in UB4, by flood risk Of the 704 postcodes in UB4 that ONS places, 18 have a home or business at high risk, 3 are at medium risk at worst, 35 are at low risk at worst, 7 are at very low risk only and 641 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 12 postcodes at high or medium risk. 2 postcodes lie beyond the edge and are listed under the map. Places named: Yeading, Belmore. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A437 YeadingBelmore
  • A home or business at high risk: 18
  • At medium risk at worst: 3
  • At low risk at worst: 35
  • At very low risk only: 7
  • Not on the at-risk list: 641
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 704 postcodes in UB4 that ONS places, 18 have a home or business at high risk, 3 are at medium risk at worst, 35 are at low risk at worst, 7 are at very low risk only and 641 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 51.5260, longitude -0.4086. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

18 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

UB4 0EG42 at high riskUB4 9AQ36 at high riskUB4 9AG31 at high riskUB4 9AH28 at high riskUB4 9ER21 at high riskUB4 9EL10 at high riskUB4 9EN10 at high riskUB4 9EP9 at high riskUB4 9HP8 at high riskUB4 0BH8 at high riskUB4 0EQ6 at high riskUB4 0BP5 at high risk

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

UB4 8PAUB4 9XF

Where the postcodes at high or medium risk lie together

  • 12 postcodes at high or medium risk, outlined on the map. UB4 9AQ, is the one with most homes and businesses at high risk.

What broadband can you get in UB4?

Ofcom reports on 698 of the 704 postcodes in UB4. At 618 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit618 of 698
Postcodes where every home can get superfast672 of 698

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is UB4 at risk of flooding?

63 of the 704 postcodes in UB4 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 327 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 63 of 704 postcodes High: 224Medium: 103Low: 798Very low: 158

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in UB4?

Homes in UB4 sold for a typical £490,000 in the 12 months to August 2026, across 172 sales, up 1% on the 12 months before, HM Land Registry's figures show.

£490,000 typical price, the 12 months to August 2026
12 months to August 2025
£485,000
12 months to August 2026
£490,000

▲ up 1% on the 12 months before

Detached 3 sales, too few to price
Semi-detached£525,000 80 sales
Terraced£450,000 49 sales
Flat or maisonette£291,000 40 sales

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in UB4

Pick a sector, then a postcode. A sector is the district plus the next digit.

UB4 0213 postcodesUB4 8241 postcodesUB4 9250 postcodes
UK postcode format explained

Places in UB4

Towns and villages with postcodes in UB4, and how many each has here.

Hillingdon postcodes,695Ealing postcodes,6

Who covers UB4

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Hayes and Harlington704

Police force areas

  • Metropolitan Police704

Next to UB4

UB3 postcode district UB5 postcode district All UB districts Hillingdon postcodes

"Next to" is by number: the districts before and after UB4 in the UB area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.