SL POSTCODE AREA · 9 DISTRICTS SAMPLED
Slough mobile coverage EE indoors runs from 14% to 100% by district SL postcode area
No network wins Slough on overall coverage: all four are within 1 point, but indoors Three and Vodafone reach 100% of sampled addresses and EE 95%.
Slough as a whole
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O2
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Three
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Vodafone
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EE
Ofcom Mobile Coverage data (May 2025), measured across 789 addresses in 51 sampled postcodes, pooled from 9 districts. Methodology.
What differs inside Slough
Where the networks split most
- SL9 Denham, Gerrards Cross, Chalfont St Giles: indoors O2, Three and Vodafone 100%, EE 14%.
- SL4 Dedworth, Bray, Eton: indoors EE, Three and Vodafone 100%, O2 90%.
Each network's weakest and strongest district
Middle of the area against its edges
The 2 districts nearest the middle (SL2 Burnham, SL6 Bray) against the 2 furthest out (SL5 Ascot, SL9 Denham):
- EE indoors: 100% in the middle, 71% at the edges.
District by district
| District | Places | Indoor, low to high | Addresses |
|---|---|---|---|
| SL1 | Cippenham, Burnham, Hedsor | 100% on all four | 23 small sample |
| SL2 | Burnham, Britwell, Stoke Poges | 100% on all four | 94 |
| SL3 | Iver, Stoke Poges, Wexham Court | 100% on all four | 115 |
| SL4 | Dedworth, Bray, Eton | O2 90%; the rest 100% | 178 |
| SL5 | Ascot, Chobham, Winkfield | 100% on all four | 96 |
| SL6 | Bray, Bisham, Hurley | 100% on all four | 105 |
| SL7 | Bisham, Marlow, Hambleden | O2 94%; the rest 100% | 89 |
| SL8 | Cookham, Hedsor, Wooburn | 100% on all four | 39 |
| SL9 | Denham, Gerrards Cross, Chalfont St Giles | EE 14%; the rest 100% | 50 |
Marked small sample: under 30 addresses sampled. Listed, but left out of the comparisons above.
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