SM4 DISTRICT · MERTON

St Helier mobile coverage Within 8 points of the Sutton average SM4 · Merton

No network wins SM4 on overall coverage: all four score 100/100.

SM4: St Helier, Ravensbury, Cannon Hill, Merton Park, Lower Morden, Figge's Marsh (Merton, Sutton).

SM4 scores

=
EE
Overall: 100/100
5G
100%
4G
100%
Indoor
100%
=
O2
Overall: 100/100
5G
100%
4G
100%
Indoor
100%
=
Three
Overall: 100/100
5G
100%
4G
100%
Indoor
100%
=
Vodafone
Overall: 100/100
5G
100%
4G
100%
Indoor
100%

Ofcom Mobile Coverage data (May 2025), measured across 160 addresses in 5 sampled postcodes: SM4 5AN, SM4 5NG, SM4 5PG, SM4 5RB, SM4 6RD. Methodology.

How SM4 compares

Every network here is within 8 points of the Sutton average and of SM3 Epsom, SM1 Sutton, SM5 St Helier and SM2 Sutton, indoors and outdoors.

Weakest spot in Sutton: SM7 Reigate, where Three reaches 63% indoors.

Indoor signal around SM4

Districtkm awayEEO2ThreeVodafone
SM4 St Helier (here) – 100%100%100%100%
SM3 Epsom, Ewell 3 100%100%100%100%
SM1 Sutton, Cheam 3 100%100%100%100%
SM5 St Helier, Wallington 3 100%100%100%100%
SM2 Sutton, Epsom 5 100%100%100%100%
Sutton average – 100%100%97%100%

Compare plans

See EE plans → Or compare O2 (100/100) → Phone Finder →

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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