Q1
Best network for CM5?
EE leads with 83/100 — driven by 69% 5G and 98% 4G in this mixed urban-rural part of Chelmsford.
CM5 DISTRICT · CHELMSFORD
Best mobile network in CM5 Chelmsford postcode district
Comparing EE, Vodafone, O2 and Three across 5G · 4G · 3G for the CM5 postcode district in Chelmsford.
RESULT · CM5 · CHELMSFORD
Coverage for CM5 district
★ BEST OPERATOR
EE
83/100
EE delivers the strongest coverage for the CM5 district in Chelmsford. Scored across 5G, 4G and 3G using the latest UK operator footprint data.
Full ranking — CM5
#1
EE
#2
Three
#3
O2
#4
Vodafone
Coverage analysis — CM5
Drawing on Ofcom Connected Nations 2024 premises coverage statistics, EE scores highest across Chelmsford. In this mixed urban-rural area, EE achieves an overall coverage score of 83/100 — driven by good 5G coverage (69%) and rock-solid 4G at 98%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
EE consistently leads Three by 7 points overall. While Three reaches 56% on 5G and 96% on 4G in Chelmsford, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 74 and 72 respectively.
Best phone deals from EE
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Explore the Chelmsford area
View full coverage analysis for the Chelmsford (CM) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — CM5
Q2
Is 5G available in CM5?
EE provides good 5G coverage at 69%. Three follows at 56%.
Q3
Which network has the best 4G?
EE leads 4G too at 98%. Reliable 4G is critical in mixed urban-rural areas.
Q4
Is O2 worth considering?
O2 scores 74/100 in CM5 (51% 5G, 97% 4G). It may suit certain tariff or price preferences despite trailing the top two.