SL1 1 postcode sector in the SL1 district

SL1 1 is a sector of the SL1 district: every postcode that starts SL1 1. It has 182 postcodes in use, 14 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 SL1 1 sector, by gigabit broadband

Map of every postcode in the SL1 1 sector, by gigabit broadband Of the 182 postcodes in the SL1 1 sector that ONS places, 10 have no home or business that can get gigabit, 26 have some that can, 134 can all get it and 12 have no Ofcom figure. One group of postcodes without gigabit is outlined: 6 postcodes without gigabit. Places named: Herschel Park, Slough Central. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A4A412 SL1 1BH: no Ofcom figureSL1 1GU: no Ofcom figureSL1 1GX: no Ofcom figureSL1 1HF: no Ofcom figureSL1 1HY: no Ofcom figureSL1 1JL: no Ofcom figureSL1 1NS: no Ofcom figureSL1 1PF: no Ofcom figureSL1 1AA: gigabit for allSL1 1AG: gigabit for allSL1 1AN: gigabit for allSL1 1AW: gigabit for allSL1 1AY: gigabit for allSL1 1BY: gigabit for allSL1 1DB: gigabit for allSL1 1DD: gigabit for allSL1 1DG: gigabit for allSL1 1DJ: gigabit for allSL1 1DL: gigabit for allSL1 1DN: gigabit for allSL1 1DS: gigabit for allSL1 1DY: gigabit for allSL1 1DZ: gigabit for allSL1 1EE: gigabit for allSL1 1EH: gigabit for allSL1 1EP: gigabit for allSL1 1EX: gigabit for allSL1 1FF: gigabit for allSL1 1FG: gigabit for allSL1 1FQ: gigabit for allSL1 1GF: gigabit for allSL1 1GG: gigabit for allSL1 1GQ: gigabit for allSL1 1GR: gigabit for allSL1 1GT: gigabit for allSL1 1GZ: gigabit for allSL1 1HE: gigabit for allSL1 1HQ: gigabit for allSL1 1HW: gigabit for allSL1 1HX: gigabit for allSL1 1JA: gigabit for allSL1 1JF: gigabit for allSL1 1JP: gigabit for allSL1 1JQ: gigabit for allSL1 1JR: gigabit for allSL1 1LE: gigabit for allSL1 1NE: gigabit for allSL1 1NF: gigabit for allSL1 1NG: gigabit for allSL1 1NH: gigabit for allSL1 1NJ: gigabit for allSL1 1NL: gigabit for allSL1 1NN: gigabit for allSL1 1NP: gigabit for allSL1 1NR: gigabit for allSL1 1NT: gigabit for allSL1 1NU: gigabit for allSL1 1NW: gigabit for allSL1 1NX: gigabit for allSL1 1NY: gigabit for allSL1 1PE: gigabit for allSL1 1PG: gigabit for allSL1 1PJ: gigabit for allSL1 1PL: gigabit for allSL1 1PQ: gigabit for allSL1 1PR: gigabit for allSL1 1PS: gigabit for allSL1 1PW: gigabit for allSL1 1PX: gigabit for allSL1 1QA: gigabit for allSL1 1QH: gigabit for allSL1 1QN: gigabit for allSL1 1QR: gigabit for allSL1 1QS: gigabit for allSL1 1QW: gigabit for allSL1 1QX: gigabit for allSL1 1QZ: gigabit for allSL1 1RB: gigabit for allSL1 1RD: gigabit for allSL1 1RE: gigabit for allSL1 1RF: gigabit for allSL1 1RG: gigabit for allSL1 1RN: gigabit for allSL1 1RP: gigabit for allSL1 1RQ: gigabit for allSL1 1RR: gigabit for allSL1 1RS: gigabit for allSL1 1RT: gigabit for allSL1 1RU: gigabit for allSL1 1RW: gigabit for allSL1 1RX: gigabit for allSL1 1RZ: gigabit for allSL1 1SB: gigabit for allSL1 1SD: gigabit for allSL1 1SE: gigabit for allSL1 1SF: gigabit for allSL1 1SJ: gigabit for allSL1 1SN: gigabit for allSL1 1SP: gigabit for allSL1 1SU: gigabit for allSL1 1SW: gigabit for allSL1 1SX: gigabit for allSL1 1SZ: gigabit for allSL1 1TA: gigabit for allSL1 1TB: gigabit for allSL1 1TD: gigabit for allSL1 1TE: gigabit for allSL1 1TF: gigabit for allSL1 1TG: gigabit for allSL1 1TH: gigabit for allSL1 1TJ: gigabit for allSL1 1TN: gigabit for allSL1 1TP: gigabit for allSL1 1TS: gigabit for allSL1 1TT: gigabit for allSL1 1TW: gigabit for allSL1 1TX: gigabit for allSL1 1UA: gigabit for allSL1 1UB: gigabit for allSL1 1UD: gigabit for allSL1 1UN: gigabit for allSL1 1UP: gigabit for allSL1 1UR: gigabit for allSL1 1US: gigabit for allSL1 1UT: gigabit for allSL1 1UW: gigabit for allSL1 1UX: gigabit for allSL1 1XA: gigabit for allSL1 1XB: gigabit for allSL1 1XQ: gigabit for allSL1 1XW: gigabit for allSL1 1XY: gigabit for allSL1 1XZ: gigabit for allSL1 1YH: gigabit for allSL1 1YW: gigabit for allSL1 1BD: some gigabitSL1 1BN: some gigabitSL1 1DH: some gigabitSL1 1DQ: some gigabitSL1 1EL: some gigabitSL1 1EQ: some gigabitSL1 1GN: some gigabitSL1 1HL: some gigabitSL1 1JS: some gigabitSL1 1JU: some gigabitSL1 1NB: some gigabitSL1 1NZ: some gigabitSL1 1PA: some gigabitSL1 1PB: some gigabitSL1 1PD: some gigabitSL1 1PP: some gigabitSL1 1PU: some gigabitSL1 1QJ: some gigabitSL1 1QP: some gigabitSL1 1RA: some gigabitSL1 1SG: some gigabitSL1 1SR: some gigabitSL1 1UH: some gigabitSL1 1UL: some gigabitSL1 1XD: some gigabitSL1 1XU: some gigabitSL1 1AE: no gigabitSL1 1AQ: no gigabitSL1 1GE: no gigabitSL1 1GW: no gigabitSL1 1HP: no gigabitSL1 1JJ: no gigabitSL1 1LU: no gigabitSL1 1UE: no gigabitSL1 1UG: no gigabitSL1 1XN: no gigabit Herschel ParkSlough Central 6 postcodes without gigabit, outlined: this goes to SL1 1JJ, the one nearest the middle of them6 postcodes without gigabit Map of every postcode in the SL1 1 sector, by gigabit broadband Of the 182 postcodes in the SL1 1 sector that ONS places, 10 have no home or business that can get gigabit, 26 have some that can, 134 can all get it and 12 have no Ofcom figure. One group of postcodes without gigabit is outlined: 6 postcodes without gigabit. Places named: Herschel Park, Slough Central. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Herschel ParkSlough Central 6 postcodes without gigabit, outlined: this goes to SL1 1JJ, the one nearest the middle of them6 postcodes without gigabit
  • No home or business can get gigabit: 10
  • Some can get gigabit: 26
  • Every home and business can get gigabit: 134
  • Ofcom gives no figure: 12
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 182 postcodes in the SL1 1 sector that ONS places, 10 have no home or business that can get gigabit, 26 have some that can, 134 can all get it and 12 have no Ofcom figure.

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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Postcodes without gigabit

SL1 1AESL1 1AQSL1 1GESL1 1GWSL1 1HPSL1 1JJSL1 1LUSL1 1UESL1 1UGSL1 1XN

Where the postcodes without gigabit lie together

  • 6 postcodes without gigabit, outlined on the map. SL1 1JJ, is the one nearest the middle of them.

What do homes sell for in SL1 1?

Homes in SL1 1 sold for a typical £195,000 in the 12 months to September 2026, across 18 sales, HM Land Registry's figures show. The 12 months before gave £240,000 from 43 sales. With fewer than 30 sales a year, a change can come from which homes happened to sell, so we do not give one.

£195,000 typical price, the 12 months to September 2026
£240,000 12 months to September 2025
  • Semi-detached 2 sales, too few to price
  • Flat or maisonette £186,000 16 sales

Standard sales of homes at market value at the postcodes that start SL1 1. 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 October 2026.

Postcodes in SL1 1

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

SL1 1AASL1 1AESL1 1AGSL1 1ALSL1 1ANSL1 1AQSL1 1AWSL1 1AYSL1 1BDSL1 1BHSL1 1BNSL1 1BXSL1 1BYSL1 1DBSL1 1DDSL1 1DGSL1 1DHSL1 1DJSL1 1DLSL1 1DNSL1 1DQSL1 1DSSL1 1DYSL1 1DZSL1 1EESL1 1EHSL1 1ELSL1 1EPSL1 1EQSL1 1ERSL1 1EXSL1 1FFSL1 1FGSL1 1FQSL1 1FSSL1 1GESL1 1GFSL1 1GGSL1 1GNSL1 1GQSL1 1GRSL1 1GTSL1 1GUSL1 1GWSL1 1GXSL1 1GZSL1 1HDSL1 1HESL1 1HFSL1 1HLSL1 1HPSL1 1HQSL1 1HWSL1 1HXSL1 1HYSL1 1HZSL1 1JASL1 1JFSL1 1JJSL1 1JLSL1 1JPSL1 1JQSL1 1JRSL1 1JSSL1 1JUSL1 1LESL1 1LNSL1 1LUSL1 1NBSL1 1NESL1 1NFSL1 1NGSL1 1NHSL1 1NJSL1 1NLSL1 1NNSL1 1NPSL1 1NRSL1 1NSSL1 1NTSL1 1NUSL1 1NWSL1 1NXSL1 1NYSL1 1NZSL1 1PASL1 1PBSL1 1PDSL1 1PESL1 1PFSL1 1PGSL1 1PJSL1 1PLSL1 1PPSL1 1PQSL1 1PRSL1 1PSSL1 1PUSL1 1PWSL1 1PXSL1 1QASL1 1QESL1 1QHSL1 1QJSL1 1QNSL1 1QPSL1 1QRSL1 1QSSL1 1QWSL1 1QXSL1 1QZSL1 1RASL1 1RBSL1 1RDSL1 1RESL1 1RFSL1 1RGSL1 1RNSL1 1RPSL1 1RQSL1 1RRSL1 1RSSL1 1RTSL1 1RUSL1 1RWSL1 1RXSL1 1RZSL1 1SBSL1 1SDSL1 1SESL1 1SFSL1 1SGSL1 1SJSL1 1SNSL1 1SPSL1 1SRSL1 1SUSL1 1SWSL1 1SXSL1 1SZSL1 1TASL1 1TBSL1 1TDSL1 1TESL1 1TFSL1 1TGSL1 1THSL1 1TJSL1 1TNSL1 1TPSL1 1TQSL1 1TSSL1 1TTSL1 1TWSL1 1TXSL1 1UASL1 1UBSL1 1UDSL1 1UESL1 1UGSL1 1UHSL1 1ULSL1 1UNSL1 1UPSL1 1URSL1 1USSL1 1UTSL1 1UWSL1 1UXSL1 1XASL1 1XBSL1 1XDSL1 1XNSL1 1XQSL1 1XUSL1 1XWSL1 1XYSL1 1XZSL1 1YHSL1 1YLSL1 1YPSL1 1YW

Source: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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