SL4 · Windsor and Maidenhead

SL4 broadband and area guide

Ofcom coverage, connection speeds, house prices and local data for 1,282 postcodes across 6 sectors in Windsor and Maidenhead.

Full fibre

0%

Gigabit

77%

Superfast

93%

Postcodes

1,282

SL4 covers 1,282 postcodes across Bracknell Forest with good gigabit reach. Seven in ten postcodes support 300+ Mbps, though coverage is less uniform than nearby SL5.

Broadband speeds in SL4

Share of SL4 premises by the fastest download speed available, averaged across all 1,282 postcodes in the district.

Gigabit availability stands at 77.1%, serving most of Bracknell Forest through cable networks. Superfast (30 Mbps) is near-universal at 92.9%. The 78.5% gigabit-capable share translates to 300+ Mbps speeds for most households; 14.4% access the 30-300 Mbps tier, which remains fit for purpose for remote work and streaming. Below-10Mbps postcodes account for just 0.6%, a small anomaly in otherwise healthy coverage. The absence of full fibre means cable remains the sole gigabit carrier across SL4. For the majority, speeds are not a barrier; choice between cable ISPs is the practical decision.

Under 2 Mbps
0%
2 to 5 Mbps
<1%
5 to 10 Mbps
<1%
10 to 30 Mbps
6%
30 to 300 Mbps
14%
300 Mbps and above
79%

Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.

Connectivity in detail

Below 10 Mbps USO

0%

Premises unable to get the 10 Mbps universal service minimum

Fixed wireless

0%

Premises that can use a fixed wireless access service

Broadband by sector

SL4 splits into 6 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.

SectorPostcodesSuperfastFull fibreGigabit
SL4 115075%0%41%
SL4 221395%0%84%
SL4 323599%0%82%
SL4 428896%0%88%
SL4 525098%0%87%
SL4 614683%0%60%
All SL4 1 postcodes (150)
All SL4 2 postcodes (213)
All SL4 3 postcodes (235)
SL4 3AASL4 3AESL4 3AGSL4 3AHSL4 3AJSL4 3ALSL4 3ANSL4 3APSL4 3AQSL4 3ARSL4 3ASSL4 3ATSL4 3AUSL4 3AXSL4 3AZSL4 3BASL4 3BBSL4 3BDSL4 3BESL4 3BGSL4 3BHSL4 3BJSL4 3BLSL4 3BNSL4 3BPSL4 3BQSL4 3BTSL4 3BUSL4 3BWSL4 3BXSL4 3BYSL4 3BZSL4 3DASL4 3DBSL4 3DDSL4 3DESL4 3DFSL4 3DGSL4 3DHSL4 3DJSL4 3DLSL4 3DPSL4 3DQSL4 3DRSL4 3DSSL4 3DTSL4 3DUSL4 3DWSL4 3DXSL4 3DYSL4 3DZSL4 3EASL4 3EBSL4 3EDSL4 3EESL4 3EGSL4 3EHSL4 3ELSL4 3ENSL4 3EPSL4 3EQSL4 3ERSL4 3ESSL4 3ETSL4 3EUSL4 3EWSL4 3EXSL4 3EYSL4 3EZSL4 3FASL4 3FESL4 3FFSL4 3FGSL4 3FHSL4 3FJSL4 3FLSL4 3FPSL4 3FQSL4 3GZSL4 3HASL4 3HBSL4 3HDSL4 3HESL4 3HHSL4 3HJSL4 3HLSL4 3HNSL4 3HPSL4 3HQSL4 3HRSL4 3HSSL4 3HUSL4 3HWSL4 3HYSL4 3JASL4 3JBSL4 3JDSL4 3JESL4 3JFSL4 3JGSL4 3JHSL4 3JJSL4 3JLSL4 3JNSL4 3JPSL4 3JQSL4 3JRSL4 3JSSL4 3JUSL4 3JWSL4 3JXSL4 3JYSL4 3JZSL4 3LASL4 3LBSL4 3LDSL4 3LESL4 3LFSL4 3LLSL4 3LNSL4 3LPSL4 3LRSL4 3LSSL4 3LTSL4 3LUSL4 3LWSL4 3LXSL4 3LYSL4 3LZSL4 3NASL4 3NBSL4 3NDSL4 3NESL4 3NFSL4 3NGSL4 3NHSL4 3NJSL4 3NLSL4 3NNSL4 3NPSL4 3NQSL4 3NTSL4 3NUSL4 3NWSL4 3NXSL4 3NYSL4 3NZSL4 3PASL4 3PBSL4 3PDSL4 3PESL4 3PFSL4 3PGSL4 3PHSL4 3PJSL4 3PLSL4 3PNSL4 3PPSL4 3PQSL4 3PRSL4 3PSSL4 3PTSL4 3PUSL4 3PWSL4 3PXSL4 3PYSL4 3PZSL4 3QASL4 3QBSL4 3QDSL4 3QESL4 3QFSL4 3QNSL4 3QPSL4 3QQSL4 3QRSL4 3QSSL4 3QTSL4 3QUSL4 3QWSL4 3QXSL4 3QYSL4 3QZSL4 3RASL4 3RBSL4 3RDSL4 3RESL4 3RFSL4 3RGSL4 3RHSL4 3RJSL4 3RLSL4 3RNSL4 3RQSL4 3RTSL4 3RUSL4 3RWSL4 3RXSL4 3RYSL4 3RZSL4 3SASL4 3SBSL4 3SDSL4 3SESL4 3SFSL4 3SGSL4 3SHSL4 3SJSL4 3SLSL4 3SNSL4 3SPSL4 3SQSL4 3SRSL4 3SSSL4 3STSL4 3SUSL4 3SWSL4 3SXSL4 3SYSL4 3SZSL4 3TASL4 3TBSL4 3TDSL4 3TESL4 3THSL4 3TNSL4 3TPSL4 3TQSL4 3TRSL4 3TSSL4 3TTSL4 3TWSL4 3UUSL4 3WNSL4 3YL
All SL4 4 postcodes (288)
SL4 4AASL4 4ABSL4 4ADSL4 4AESL4 4AFSL4 4AGSL4 4AHSL4 4AJSL4 4ALSL4 4ANSL4 4APSL4 4AQSL4 4ARSL4 4ASSL4 4ATSL4 4AUSL4 4AWSL4 4AXSL4 4AYSL4 4AZSL4 4BASL4 4BDSL4 4BESL4 4BFSL4 4BGSL4 4BHSL4 4BJSL4 4BLSL4 4BPSL4 4BQSL4 4BSSL4 4BTSL4 4BUSL4 4BWSL4 4BXSL4 4BYSL4 4BZSL4 4DASL4 4DBSL4 4DDSL4 4DESL4 4DHSL4 4DJSL4 4DNSL4 4DPSL4 4DQSL4 4DRSL4 4DSSL4 4DTSL4 4DUSL4 4DWSL4 4DXSL4 4DYSL4 4DZSL4 4EASL4 4EBSL4 4EFSL4 4EGSL4 4EHSL4 4EJSL4 4ELSL4 4ENSL4 4EPSL4 4ERSL4 4ESSL4 4ETSL4 4EUSL4 4EWSL4 4EXSL4 4EYSL4 4FBSL4 4FGSL4 4FNSL4 4GESL4 4GYSL4 4HASL4 4HBSL4 4HDSL4 4HESL4 4HFSL4 4HGSL4 4HHSL4 4HJSL4 4HLSL4 4HQSL4 4HRSL4 4HSSL4 4HTSL4 4HUSL4 4HXSL4 4HYSL4 4HZSL4 4JASL4 4JBSL4 4JDSL4 4JESL4 4JFSL4 4JGSL4 4JHSL4 4JJSL4 4JLSL4 4JNSL4 4JPSL4 4JQSL4 4JRSL4 4JSSL4 4JTSL4 4JUSL4 4JWSL4 4JXSL4 4JYSL4 4JZSL4 4LASL4 4LBSL4 4LDSL4 4LESL4 4LFSL4 4LGSL4 4LHSL4 4LJSL4 4LLSL4 4LNSL4 4LPSL4 4LRSL4 4LSSL4 4LWSL4 4LYSL4 4LZSL4 4NASL4 4NBSL4 4NDSL4 4NESL4 4NFSL4 4NGSL4 4NHSL4 4NJSL4 4NLSL4 4NNSL4 4NPSL4 4NQSL4 4NRSL4 4NSSL4 4NTSL4 4NWSL4 4NYSL4 4NZSL4 4PASL4 4PBSL4 4PDSL4 4PESL4 4PFSL4 4PGSL4 4PHSL4 4PJSL4 4PLSL4 4PNSL4 4PPSL4 4PQSL4 4PRSL4 4PSSL4 4PTSL4 4PUSL4 4PWSL4 4PXSL4 4PYSL4 4PZSL4 4QASL4 4QDSL4 4QESL4 4QFSL4 4QGSL4 4QHSL4 4QJSL4 4QNSL4 4QQSL4 4QRSL4 4QSSL4 4QTSL4 4QUSL4 4QWSL4 4QXSL4 4QYSL4 4QZSL4 4RASL4 4RBSL4 4RESL4 4RHSL4 4RJSL4 4RLSL4 4RNSL4 4RPSL4 4RRSL4 4RSSL4 4RUSL4 4RWSL4 4RXSL4 4RZSL4 4SASL4 4SBSL4 4SDSL4 4SESL4 4SFSL4 4SGSL4 4SHSL4 4SJSL4 4SLSL4 4SNSL4 4SPSL4 4SQSL4 4SRSL4 4SSSL4 4STSL4 4SUSL4 4SWSL4 4SYSL4 4SZSL4 4TASL4 4TBSL4 4TESL4 4TFSL4 4TGSL4 4THSL4 4TJSL4 4TLSL4 4TNSL4 4TPSL4 4TRSL4 4TSSL4 4TTSL4 4TUSL4 4TWSL4 4TXSL4 4TYSL4 4TZSL4 4UASL4 4UBSL4 4UDSL4 4UESL4 4UFSL4 4UGSL4 4UHSL4 4ULSL4 4UNSL4 4UPSL4 4UQSL4 4URSL4 4USSL4 4UTSL4 4WASL4 4XASL4 4XDSL4 4XESL4 4XFSL4 4XGSL4 4XHSL4 4XJSL4 4XLSL4 4XNSL4 4XPSL4 4XQSL4 4XRSL4 4XSSL4 4XTSL4 4XUSL4 4XWSL4 4XXSL4 4XYSL4 4XZSL4 4YASL4 4YBSL4 4YDSL4 4YESL4 4YFSL4 4YGSL4 4YHSL4 4YJSL4 4YLSL4 4YNSL4 4YPSL4 4YQSL4 4YRSL4 4YSSL4 4YTSL4 4YUSL4 4YWSL4 4YXSL4 4YYSL4 4YZ
All SL4 5 postcodes (250)
SL4 5AASL4 5ABSL4 5ADSL4 5AESL4 5AFSL4 5AHSL4 5ALSL4 5ANSL4 5APSL4 5AQSL4 5ARSL4 5ASSL4 5ATSL4 5AUSL4 5AWSL4 5AXSL4 5AYSL4 5AZSL4 5BBSL4 5BDSL4 5BESL4 5BGSL4 5BHSL4 5BLSL4 5BPSL4 5BQSL4 5BSSL4 5BTSL4 5BUSL4 5BWSL4 5BXSL4 5BYSL4 5BZSL4 5DASL4 5DBSL4 5DDSL4 5DFSL4 5DGSL4 5DHSL4 5DJSL4 5DLSL4 5DPSL4 5DQSL4 5DRSL4 5DSSL4 5DTSL4 5DUSL4 5DXSL4 5DYSL4 5EASL4 5EBSL4 5EDSL4 5EGSL4 5EHSL4 5EJSL4 5ELSL4 5ENSL4 5EPSL4 5EQSL4 5ERSL4 5ESSL4 5ETSL4 5EUSL4 5EWSL4 5EXSL4 5EYSL4 5EZSL4 5FFSL4 5FGSL4 5FNSL4 5FQSL4 5FWSL4 5FYSL4 5FZSL4 5GDSL4 5GESL4 5GFSL4 5GGSL4 5GLSL4 5GNSL4 5GPSL4 5GQSL4 5GRSL4 5GSSL4 5GTSL4 5GWSL4 5GXSL4 5HASL4 5HBSL4 5HDSL4 5HESL4 5HFSL4 5HGSL4 5HJSL4 5HLSL4 5HNSL4 5HPSL4 5HQSL4 5HSSL4 5HTSL4 5HUSL4 5HWSL4 5HZSL4 5JASL4 5JBSL4 5JDSL4 5JESL4 5JFSL4 5JGSL4 5JHSL4 5JJSL4 5JLSL4 5JNSL4 5JQSL4 5JRSL4 5JSSL4 5JTSL4 5JYSL4 5JZSL4 5LASL4 5LBSL4 5LDSL4 5LESL4 5LGSL4 5LHSL4 5LJSL4 5LPSL4 5LQSL4 5LRSL4 5LSSL4 5LTSL4 5LUSL4 5LWSL4 5LXSL4 5LYSL4 5LZSL4 5NASL4 5NBSL4 5NDSL4 5NESL4 5NFSL4 5NGSL4 5NHSL4 5NLSL4 5NNSL4 5NPSL4 5NQSL4 5NRSL4 5NSSL4 5NTSL4 5NUSL4 5NWSL4 5NXSL4 5NZSL4 5PASL4 5PDSL4 5PESL4 5PFSL4 5PGSL4 5PHSL4 5PJSL4 5PLSL4 5PNSL4 5PPSL4 5PQSL4 5PRSL4 5PSSL4 5PTSL4 5PUSL4 5PWSL4 5PXSL4 5PYSL4 5PZSL4 5QASL4 5QBSL4 5QDSL4 5QESL4 5QNSL4 5QPSL4 5QRSL4 5QSSL4 5QTSL4 5QUSL4 5QWSL4 5QXSL4 5QYSL4 5QZSL4 5RASL4 5RBSL4 5RDSL4 5RESL4 5RFSL4 5RGSL4 5RHSL4 5RJSL4 5RLSL4 5RNSL4 5RPSL4 5RQSL4 5RRSL4 5RSSL4 5RTSL4 5RWSL4 5SESL4 5SFSL4 5SGSL4 5SHSL4 5SJSL4 5SLSL4 5SNSL4 5SPSL4 5SQSL4 5SSSL4 5STSL4 5SUSL4 5SWSL4 5SXSL4 5SYSL4 5SZSL4 5TASL4 5TBSL4 5TDSL4 5TESL4 5TGSL4 5THSL4 5TJSL4 5TLSL4 5TNSL4 5TPSL4 5TRSL4 5TSSL4 5TTSL4 5TUSL4 5TWSL4 5TXSL4 5TYSL4 5TZSL4 5UASL4 5UBSL4 5UDSL4 5UGSL4 5UJSL4 5ULSL4 5UNSL4 5UPSL4 5UQSL4 5URSL4 5UTSL4 5UUSL4 5UW
All SL4 6 postcodes (146)

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Living in Windsor and Maidenhead

SL4's 1,282 postcodes span suburban and commuter-belt properties. With gigabit so prevalent, broadband quality is not a constraint on moving decisions here, though patch checks remain prudent given the size of the area.

Remote worker score

54/100

Connectivity and amenities for home working

Family score

50/100

Schools, safety and family amenities

Value score

50/100

What you get for the local price level

SL4 broadband FAQs

Is there gigabit cable here?

Yes. 77.1% of SL4 postcodes can access gigabit speeds via cable networks. The remaining postcodes support 30-300 Mbps, which is adequate for most households.

What about the postcodes below 10 Mbps?

Only 0.6% fall into that bracket, so the risk is minimal. Nonetheless, verify your specific postcode before moving or signing contracts.

Why no full fibre?

SL4 has no full fibre infrastructure recorded; cable is the primary gigabit pathway. Fibre may arrive in future rollouts, but today cable dominates.

How does SL4 stack up regionally?

Gigabit at 77.1% is solid for the South East but trails the very best districts. It mirrors the regional cable-build pattern where roll-out has been gradual and selective.

Neighbouring districts

Check your exact postcode

Every postcode in SL4 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.

Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources