Ascot mobile coverage O2 100% indoors here, 90% in SL4 nearby SL5 · Bracknell Forest
No network wins SL5 on overall coverage: all four score 100/100.
SL5: Ascot, Chobham, Winkfield, Windlesham, Old Windsor, Sunningdale, Sunninghill, Bagshot (Bracknell Forest, Runnymede, Surrey Heath).
SL5 scores
Ofcom Mobile Coverage data (May 2025), measured across 96 addresses in 6 sampled postcodes: SL5 7AA, SL5 7AW, SL5 7DQ, SL5 7FU, SL5 9AW, SL5 9DF. Methodology.
How SL5 compares
Every network here is within 8 points of the Slough average, indoors and outdoors.
Weakest spot in Slough: SL9 Denham, where EE reaches 14% indoors.
Indoor signal around SL5
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| SL5 Ascot (here) | – | 100% | 100% | 100% | 100% |
| SL4 Dedworth, Bray | 8 | 100% | 90% | 100% | 100% |
| SL1 Cippenham, Burnham small sample | 13 | 100% | 100% | 100% | 100% |
| SL3 Iver, Stoke Poges | 13 | 100% | 100% | 100% | 100% |
| SL6 Bray, Bisham | 14 | 100% | 100% | 100% | 100% |
| Slough average | – | 95% | 97% | 100% | 100% |
Biggest difference nearby: O2 indoors, 100% here and 90% in SL4 Dedworth, 8 km away.
Small sample: under 30 addresses sampled.
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1pMobile runs on EE's network: £5 a month for 5GB (read 19 October 2026). A price, not a coverage ranking: Ofcom separates no network here.
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