Q1
Best network for SW15?
EE leads with 100/100 — driven by 100% 5G and 100% 4G in this densely populated urban part of South West London.
SW15 DISTRICT · KINGSTON UPON THAMES
Best mobile network in Putney SW15 · Kingston upon Thames
EE scores 100/100 — the best measured network for SW15 in South West London, 9 points clear of the weakest. 100% 5G-grade · 100% 4G. Ofcom Mobile Coverage data (May 2025), measured across 161 addresses in 5 sampled postcodes.
The SW15 district covers Putney, Mortlake, West Hill and Roehampton, in Kingston upon Thames. Signal varies street by street — scan your exact postcode below.
RESULT · SW15 · SOUTH WEST LONDON
Coverage for SW15 district
★ BEST MEASURED
EE
100/100
EE has the strongest measured coverage for the SW15 district in South West London, 9 points clear of the weakest network in Ofcom's data.
Full ranking — SW15
#1
EE
#2
Three
#3
Vodafone
#4
O2
Coverage analysis — SW15
Comparing Ofcom-measured operator coverage, EE leads the field in South West London. In this densely populated urban area, EE 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.
EE comfortably leads Three by 0 points overall. While Three reaches 100% on 5G and 100% on 4G in South West London, it falls short of EE's combined performance across all bands. Vodafone and O2 round out the field at 100 and 91 respectively.
Why EE for SW15?
EE's 5G rollout in South West London is among the strongest nationally, covering 100% of premises in the SW15 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 SW15 is Three at 100/100 (100% 5G / 100% 4G). It is a close contest — both operators deliver strong coverage in SW15, and your choice may come down to tariff, handset preference, or existing contract.
Switching to EE in Putney
EE has the strongest measured signal here — 100/100, with 100% 5G-grade and 100% 4G coverage across Putney, Mortlake, West Hill and Roehampton, 9 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 South West London area
View full coverage analysis for the South West London (SW) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — SW15
Q2
Is 5G available in SW15?
EE provides excellent 5G coverage at 100%. Three follows at 100%.
Q3
Which network has the best 4G?
EE leads 4G too at 100%. Reliable 4G is critical in densely populated urban areas.
Q4
Is Vodafone worth considering?
Vodafone scores 100/100 in SW15 (100% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.