Cookham mobile coverage Within 8 points of the Slough average SL8 · Buckinghamshire
No network wins SL8 on overall coverage: all four score 100/100.
SL8: Cookham, Hedsor, Wooburn, Little Marlow, Bisham, The Wooburns, Flackwell Heath, Chiltern Villages (Buckinghamshire, Windsor and Maidenhead).
SL8 scores
Ofcom Mobile Coverage data (May 2025), measured across 39 addresses in 5 sampled postcodes: SL8 5AA, SL8 5AX, SL8 5FN, SL8 5LT, SL8 5SR. Methodology.
How SL8 compares
Every network here is within 8 points of the Slough average and of SL7 Bisham, SL6 Bray, SL2 Burnham and SL1 Cippenham, indoors and outdoors.
Weakest spot in Slough: SL9 Denham, where EE reaches 14% indoors.
Indoor signal around SL8
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| SL8 Cookham (here) | – | 100% | 100% | 100% | 100% |
| SL7 Bisham, Marlow | 5 | 100% | 94% | 100% | 100% |
| SL6 Bray, Bisham | 6 | 100% | 100% | 100% | 100% |
| SL2 Burnham, Britwell | 9 | 100% | 100% | 100% | 100% |
| SL1 Cippenham, Burnham small sample | 9 | 100% | 100% | 100% | 100% |
| Slough average | – | 95% | 97% | 100% | 100% |
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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