CM6 DISTRICT · BRAINTREE
Great Dunmow mobile coverage Three 57% indoors here, 83% across Chelmsford CM6 · Braintree
O2 has the best measured coverage in CM6: 100/100, 6 points ahead of Three on Ofcom's overall score, with Vodafone within 0 points.
CM6: Great Dunmow, Felsted, Takeley, Thaxted, Barnston, Stebbing, High Easter, Flitch Green (Braintree, Chelmsford, Uttlesford).
CM6 scores
#1
O2
#2
Vodafone
#3
EE
#4
Three
Ofcom Mobile Coverage data (May 2025), measured across 178 addresses in 6 sampled postcodes: CM6 1AB, CM6 1DE, CM6 1HL, CM6 1ZG, CM6 2AX, CM6 3AR. Methodology.
How CM6 compares
Against the Chelmsford average
- Three indoors: 57% here, 83% across Chelmsford (−26).
Weakest spot in Chelmsford: CM9 Maldon, where Three reaches 50% indoors.
Indoor signal around CM6
| District | km away | EE | O2 | Three | Vodafone |
|---|---|---|---|---|---|
| CM6 Great Dunmow (here) | – | 95% | 100% | 57% | 97% |
| CM7 Braintree, Bocking | 12 | 94% | 94% | 77% | 82% |
| CM1 Writtle, Broomfield | 16 | 100% | 100% | 100% | 100% |
| CM5 Ongar, Fyfield | 19 | 100% | 96% | 80% | 96% |
| CM2 Great Baddow, Sandon | 19 | 100% | 100% | 100% | 100% |
| Chelmsford average | – | 97% | 98% | 83% | 93% |
Biggest difference nearby: Three indoors, 57% here and 77% in CM7 Braintree, 12 km away.
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