Q1
Best network for HP11?
Three leads with 100/100 — driven by 100% 5G and 100% 4G in this suburban part of Hemel Hempstead.
HP11 DISTRICT · BUCKINGHAMSHIRE
Best mobile network in Chepping Wycombe HP11 · Buckinghamshire
Three scores 100/100 — the best measured network for HP11 in Hemel Hempstead, 6 points clear of the weakest. 100% 5G-grade · 100% 4G. Ofcom Mobile Coverage data (May 2025), measured across 41 addresses in 4 sampled postcodes.
The HP11 district covers Chepping Wycombe, Marsh, Booker and Cressex, in Buckinghamshire. Signal varies street by street — scan your exact postcode below.
RESULT · HP11 · HEMEL HEMPSTEAD
Coverage for HP11 district
★ BEST MEASURED
Three
100/100
Three has the strongest measured coverage for the HP11 district in Hemel Hempstead, 6 points clear of the weakest network in Ofcom's data.
Full ranking — HP11
#1
Three
#2
Vodafone
#3
O2
#4
EE
Coverage analysis — HP11
Comparing Ofcom-measured operator coverage, Three is the best choice for Hemel Hempstead. In this suburban area, Three achieves an overall coverage score of 100/100 — driven by excellent 5G coverage (100%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.
Three noticeably leads Vodafone by 0 points overall. While Vodafone reaches 100% on 5G and 100% on 4G in Hemel Hempstead, it falls short of Three's combined performance across all bands. O2 and EE round out the field at 98 and 94 respectively.
Why Three for HP11?
Three's 5G rollout in Hemel Hempstead is among the strongest nationally, covering 100% of premises in the HP11 district. For anyone streaming video, gaming on mobile, or relying on a mobile hotspot at home, this level of 5G penetration makes a real difference to day-to-day speed.
The runner-up in HP11 is Vodafone at 100/100 (100% 5G / 100% 4G). It is a close contest — both operators deliver strong coverage in HP11, and your choice may come down to tariff, handset preference, or existing contract.
Switching to Three in Chepping Wycombe
Three has the strongest measured signal here — 100/100, with 100% 5G-grade and 100% 4G coverage across Chepping Wycombe, Marsh, Booker and Cressex, 6 points clear of the weakest. A cheaper plan on a network that does not reach your street costs more than it saves, so start from the coverage and pick the plan second.
Some links on this page are affiliate links. If you switch through one we may be paid a commission. It never changes which network we rank first - that comes from Ofcom coverage data alone.
Explore the Hemel Hempstead area
View full coverage analysis for the Hemel Hempstead (HP) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — HP11
Q2
Is 5G available in HP11?
Three provides excellent 5G coverage at 100%. Vodafone follows at 100%.
Q3
Which network has the best 4G?
Three leads 4G too at 100%. Reliable 4G is critical in suburban areas.
Q4
Is O2 worth considering?
O2 scores 98/100 in HP11 (100% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.