CM9 DISTRICT · BRAINTREE
Maldon mobile coverage Three 50% indoors here, 83% across Chelmsford CM9 · Braintree
O2 has the best measured coverage in CM9: 100/100, 8 points ahead of Three on Ofcom's overall score, with Vodafone within 0 points.
CM9: Maldon, Heybridge, Purleigh, Tollesbury, Great Totham, Hatfield Peverel, Tolleshunt D'Arcy, Mundon (Braintree, Colchester, Maldon).
CM9 scores
#1
O2
#2
Vodafone
#3
EE
#4
Three
Ofcom Mobile Coverage data (May 2025), measured across 103 addresses in 5 sampled postcodes: CM9 4BA, CM9 4NB, CM9 4PF, CM9 4TJ, CM9 4XB. Methodology.
How CM9 compares
Against the Chelmsford average
- Three indoors: 50% here, 83% across Chelmsford (−33).
- EE indoors: 82% here, 97% across Chelmsford (−15).
Lowest indoor figure of the 9 Chelmsford districts sampled, for EE and Three.
Indoor signal around CM9
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| CM9 Maldon (here) | – | 82% | 100% | 50% | 100% |
| CM3 Hanningfield, Sandon | 8 | 100% | 96% | 100% | 63% |
| CM8 Witham, Cressing | 8 | 100% | 100% | 100% | 100% |
| CM2 Great Baddow, Sandon | 15 | 100% | 100% | 100% | 100% |
| CM1 Writtle, Broomfield | 17 | 100% | 100% | 100% | 100% |
| Chelmsford average | – | 97% | 98% | 83% | 93% |
Biggest difference nearby: Three indoors, 50% here and 100% in CM3 Hanningfield, 8 km away.
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