SM POSTCODE AREA · 7 DISTRICTS SAMPLED
Sutton mobile coverage Three indoors runs from 63% to 100% by district SM postcode area
No network wins Sutton on overall coverage: all four score 100/100.
Sutton as a whole
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EE
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O2
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Three
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Vodafone
Ofcom Mobile Coverage data (May 2025), measured across 1,037 addresses in 37 sampled postcodes, pooled from 7 districts. Methodology.
What differs inside Sutton
Where the networks split most
- SM7 Reigate, Banstead, Nork: indoors EE, O2 and Vodafone 100%, Three 63%.
Each network's weakest and strongest district
| Network | Indoor |
|---|---|
| Three | 63% in SM7 Reigate; 100% in 6 districts |
Middle of the area against its edges
The 2 districts nearest the middle (SM1 Sutton, SM2 Sutton) against the 2 furthest out (SM4 St Helier, SM7 Reigate):
- Three indoors: 100% in the middle, 89% at the edges.
District by district
| District | Places | Indoor, low to high | Addresses |
|---|---|---|---|
| SM1 | Sutton, Cheam, Stonecot | 100% on all four | 191 |
| SM2 | Sutton, Epsom, Ewell | 100% on all four | 209 |
| SM3 | Epsom, Ewell, Cheam | 100% on all four | 139 |
| SM4 | St Helier, Ravensbury, Cannon Hill | 100% on all four | 160 |
| SM5 | St Helier, Wallington, Carshalton | 100% on all four | 72 |
| SM6 | Wallington, Roundshaw, Beddington | 100% on all four | 195 |
| SM7 | Reigate, Banstead, Nork | Three 63%; the rest 100% | 71 |
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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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