GL4 3 postcode sector in the GL4 district

GL4 3 is a sector of the GL4 district: every postcode that starts GL4 3. It has 141 postcodes in use, 17 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the GL4 3 sector, by flood risk

Map of every postcode in the GL4 3 sector, by flood risk Of the 141 postcodes in the GL4 3 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 7 are at low risk at worst and 131 are not on the Environment Agency's at-risk list. Places named: Barnwood. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M5A417 GL4 3AA: not on the flood risk listGL4 3AB: not on the flood risk listGL4 3AD: not on the flood risk listGL4 3AE: not on the flood risk listGL4 3AF: not on the flood risk listGL4 3AG: not on the flood risk listGL4 3AH: not on the flood risk listGL4 3AJ: not on the flood risk listGL4 3AL: not on the flood risk listGL4 3AP: not on the flood risk listGL4 3AQ: not on the flood risk listGL4 3AR: not on the flood risk listGL4 3AS: not on the flood risk listGL4 3AT: not on the flood risk listGL4 3AU: not on the flood risk listGL4 3AW: not on the flood risk listGL4 3AX: not on the flood risk listGL4 3AY: not on the flood risk listGL4 3BA: not on the flood risk listGL4 3BB: not on the flood risk listGL4 3BD: not on the flood risk listGL4 3BG: not on the flood risk listGL4 3BH: not on the flood risk listGL4 3BN: not on the flood risk listGL4 3BP: not on the flood risk listGL4 3BS: not on the flood risk listGL4 3BW: not on the flood risk listGL4 3BY: not on the flood risk listGL4 3BZ: not on the flood risk listGL4 3DB: not on the flood risk listGL4 3DG: not on the flood risk listGL4 3DH: not on the flood risk listGL4 3DJ: not on the flood risk listGL4 3DL: not on the flood risk listGL4 3DT: not on the flood risk listGL4 3DU: not on the flood risk listGL4 3DW: not on the flood risk listGL4 3DX: not on the flood risk listGL4 3EA: not on the flood risk listGL4 3EJ: not on the flood risk listGL4 3EL: not on the flood risk listGL4 3EN: not on the flood risk listGL4 3EP: not on the flood risk listGL4 3EQ: not on the flood risk listGL4 3ER: not on the flood risk listGL4 3ES: not on the flood risk listGL4 3EX: not on the flood risk listGL4 3EY: not on the flood risk listGL4 3EZ: not on the flood risk listGL4 3FH: not on the flood risk listGL4 3FJ: not on the flood risk listGL4 3FL: not on the flood risk listGL4 3FR: not on the flood risk listGL4 3FT: not on the flood risk listGL4 3GA: not on the flood risk listGL4 3GB: not on the flood risk listGL4 3GD: not on the flood risk listGL4 3GE: not on the flood risk listGL4 3GG: not on the flood risk listGL4 3HA: not on the flood risk listGL4 3HD: not on the flood risk listGL4 3HE: not on the flood risk listGL4 3HF: not on the flood risk listGL4 3HG: not on the flood risk listGL4 3HH: not on the flood risk listGL4 3HL: not on the flood risk listGL4 3HN: not on the flood risk listGL4 3HP: not on the flood risk listGL4 3HR: not on the flood risk listGL4 3HS: not on the flood risk listGL4 3HW: not on the flood risk listGL4 3HX: not on the flood risk listGL4 3HZ: not on the flood risk listGL4 3JA: not on the flood risk listGL4 3JB: not on the flood risk listGL4 3JF: not on the flood risk listGL4 3JG: not on the flood risk listGL4 3JH: not on the flood risk listGL4 3JJ: not on the flood risk listGL4 3JL: not on the flood risk listGL4 3JN: not on the flood risk listGL4 3JP: not on the flood risk listGL4 3JQ: not on the flood risk listGL4 3JR: not on the flood risk listGL4 3JS: not on the flood risk listGL4 3JT: not on the flood risk listGL4 3JW: not on the flood risk listGL4 3JY: not on the flood risk listGL4 3JZ: not on the flood risk listGL4 3LD: not on the flood risk listGL4 3LE: not on the flood risk listGL4 3LJ: not on the flood risk listGL4 3QA: not on the flood risk listGL4 3QR: not on the flood risk listGL4 3QS: not on the flood risk listGL4 3QT: not on the flood risk listGL4 3QU: not on the flood risk listGL4 3QW: not on the flood risk listGL4 3RG: not on the flood risk listGL4 3RJ: not on the flood risk listGL4 3RL: not on the flood risk listGL4 3RR: not on the flood risk listGL4 3RS: not on the flood risk listGL4 3RT: not on the flood risk listGL4 3RU: not on the flood risk listGL4 3RW: not on the flood risk listGL4 3RX: not on the flood risk listGL4 3SA: not on the flood risk listGL4 3SB: not on the flood risk listGL4 3SD: not on the flood risk listGL4 3SJ: not on the flood risk listGL4 3TA: not on the flood risk listGL4 3TB: not on the flood risk listGL4 3TD: not on the flood risk listGL4 3TN: not on the flood risk listGL4 3TP: not on the flood risk listGL4 3TQ: not on the flood risk listGL4 3TR: not on the flood risk listGL4 3TS: not on the flood risk listGL4 3TT: not on the flood risk listGL4 3TU: not on the flood risk listGL4 3TW: not on the flood risk listGL4 3TX: not on the flood risk listGL4 3TY: not on the flood risk listGL4 3XW: not on the flood risk listGL4 3YL: not on the flood risk listGL4 3YW: not on the flood risk listGL4 3YX: not on the flood risk listGL4 3AN: low flood risk at worstGL4 3BE: low flood risk at worstGL4 3BQ: low flood risk at worstGL4 3BU: low flood risk at worstGL4 3DA: low flood risk at worstGL4 3DN: low flood risk at worstGL4 3SN: low flood risk at worstGL4 3AZ: medium flood risk at worstGL4 3DP: high flood riskGL4 3YY: high flood risk Barnwood Map of every postcode in the GL4 3 sector, by flood risk Of the 141 postcodes in the GL4 3 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 7 are at low risk at worst and 131 are not on the Environment Agency's at-risk list. Places named: Barnwood. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M5A38 Barnwood
  • A home or business at high risk: 2
  • At medium risk at worst: 1
  • At low risk at worst: 7
  • At very low risk only: 0
  • Not on the at-risk list: 131

Of the 141 postcodes in the GL4 3 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 7 are at low risk at worst and 131 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. 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.

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

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

What do homes sell for in GL4 3?

Homes in GL4 3 sold for a typical £263,000 in the 12 months to August 2026, across 58 sales, down 16.5% on the 12 months before, HM Land Registry's figures show.

£263,000 typical price, the 12 months to August 2026
£315,000 12 months to August 2025
▼ down 16.5% on the 12 months before
  • Detached £445,000 13 sales
  • Semi-detached £310,000 17 sales
  • Terraced £222,500 15 sales
  • Flat or maisonette £150,000 13 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start GL4 3. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

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

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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