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Postcode area report · 1,286 postcodes

SL4 postcode area guide — Bracknell Forest

House prices, crime, broadband speeds, mobile signal, schools and demographics for the SL4 postcode district in Bracknell Forest — every official dataset on one page.

SL4 is a postcode district in Bracknell Forest, England, containing 1,286 live postcodes. Around 124,607 people live across the wider Bracknell Forest district. Homes in SL4 have sold for a median of £505,000 over the past 12 months.

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Where is SL4?

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Broadband & internet speeds in SL4

Strong coverage

Superfast (30Mb+)

93%

Ultrafast (300Mb+)

76.4%

Gigabit-capable

74.8%

Below USO (10Mb)

0.1%

Broadband availability in the SL4 postcode district (Bracknell Forest) is Strong — superfast is near-universal and gigabit is rolling out. Across the 1,286 postcodes Ofcom measures in SL4, superfast broadband (30 Mbit/s or faster) reaches 93% of premises and gigabit-capable lines are available to 74.8%.

Around 0.1% of premises in SL4 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in SL4

PostcodeSuperfastGigabit
SL4 1AA100%100%
SL4 1AE100%0%
SL4 1AF100%0%
SL4 1AG100%0%
SL4 1AN0%0%
SL4 1AT100%100%
SL4 1AZ100%100%
SL4 1BA81.8%18.2%
SL4 1BB100%12.5%
SL4 1BE100%0%

Run a speed test to see what you're actually getting, or check your exact postcode.

Mobile signal around Bracknell Forest

Ofcom's coverage model for the wider Bracknell Forest district (56,723 premises):

4G indoors — all networks

97.3%

4G outdoors — all networks

100%

5G outdoors — all networks

81%

Voice indoors — all networks

97.9%

Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.

Crime in SL4

Police recorded 235 incidents within about a mile of the centre of SL4 in May 2026 (latest published street-level data). The breakdown:

CategoryIncidentsShare
Violence & sexual offences6728.5%
Anti-social behaviour4017.0%
Shoplifting3113.2%
Public order198.1%
Other theft177.2%
Criminal damage & arson166.8%
Vehicle crime166.8%
Bicycle theft93.8%

Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).

House prices in SL4

Based on 419 sales registered with HM Land Registry in the last 12 months, the median sold price in SL4 is £505,000, essentially flat on the previous year (£506,770).

Detached

£750,000

64 sales

Semi-detached

£575,000

103 sales

Terraced

£505,000

126 sales

Flat / maisonette

£295,000

109 sales

Latest recorded sales in SL4

DatePriceTypeStreetPostcode
15 May 2026£605,000Semi-detachedHayse HillSL4 5SZ
15 May 2026£400,000TerracedForest RoadSL4 4HX
12 May 2026£360,000FlatMountbatten SquareSL4 1SY
12 May 2026£1,585,000DetachedWinkfield RoadSL4 4AF
11 May 2026£573,000Semi-detachedMills SpurSL4 2ND
8 May 2026£537,000TerracedMarshall PlaceSL4 4QD
1 May 2026£682,500Semi-detachedWalpole RoadSL4 2LZ
1 May 2026£675,000TerracedArthur RoadSL4 1RT
1 May 2026£275,000FlatKnights PlaceSL4 3LF
30 Apr 2026£315,000FlatKnights PlaceSL4 3LF

Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.

Who lives here? Bracknell Forest demographics

Census 2021 figures for the wider Bracknell Forest district (124,607 residents, 50,245 households):

Age profile
Under 1519.8%
15–2923.6%
30–4422%
45–6419.6%
65+15.2%
Housing tenure
Owner-occupied66.8%
Private rented15.8%
Social rented10.7%

Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.

Schools in and around SL4

SchoolPhaseAgesPupilsPostcode
Eton CollegeNot applicable12–191,348SL4 6DW
The Windsor Boys' SchoolSecondary13–18986SL4 5EH
Windsor Girls' SchoolSecondary13–18775SL4 3RT
Trevelyan Middle SchoolMiddle deemed secondary9–13585SL4 3LL
Dedworth Middle SchoolMiddle deemed secondary9–13517SL4 5PE
St Edward's Royal Free Ecumenical Middle School, WindsorMiddle deemed secondary9–13482SL4 5EN
St George's SchoolNot applicable3–14292SL4 1QF
Oakfield First SchoolPrimary5–9287SL4 3RU

Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.

Food hygiene ratings in SL4

518 rated food businesses operate in SL4. 358 hold the top rating of 5, 55 are rated 4, and 17 are rated 2 or below.

Among the 5-rated: A Hoppy Place, A La Russe, A P Souvenirs & Gifts, Abbeyfield At Winton House Care Home, ABM Catering At The Windsor Boys School.

Source: Food Standards Agency, food hygiene ratings (FHRS) open data.

Energy performance (EPC) in SL4

From a sample of 98 Energy Performance Certificates across 7 SL4 postcodes, the most common rating is band D (average band D). 30% of sampled homes are rated C or better.

Band C

30%

Band D

50%

Band E

17%

Band F

1%

Band G

2%

Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.

Phone area codes for Bracknell Forest

Landlines around SL4 typically use:

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What's it like living in SL4?

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Moving to SL4? Sort your connectivity first

We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Bracknell Forest — free, no-obligation quote.

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Postcodes in SL4

Neighbouring districts

All Slough (SL) postcode districts ›

Frequently asked questions

Where is the SL4 postcode?
SL4 covers Bracknell Forest in England. It contains 1,286 live postcodes. Use the map and the postcode list on this page to pinpoint an exact address.
How much do houses cost in SL4?
Based on 419 sales recorded by HM Land Registry in the last 12 months, the median price paid in SL4 is £505,000. See the house-price section above for medians by property type and the most recent sales.
Is SL4 a safe area?
Police recorded 235 incidents within a mile of the centre of SL4 in May 2026, with Violence & sexual offences the most common category. Compare the breakdown above and check street-level detail on police.uk before drawing conclusions — a busy high street inflates raw counts.
What broadband can I get in SL4?
Superfast broadband reaches 93% of premises in SL4 and gigabit-capable services 74.8%, per Ofcom Connected Nations. Enter a full postcode in the checker on this page for address-level availability.
Who lives in SL4?
In the wider Bracknell Forest district, 67% of households own their home, 16% rent privately and 11% are in social housing (Census 2021). The age profile and household counts are in the demographics section above.
How energy efficient are homes in SL4?
Across a sample of 98 Energy Performance Certificates in SL4, the most common rating is band D and the average is band D. 29 of the sampled homes are rated C or better. See the EPC section above for the full band breakdown.

Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.

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