Q1
Best network for SR6?
O2 leads with 100/100 — driven by 100% 5G and 100% 4G in this densely populated urban part of Sunderland.
SR6 DISTRICT · SOUTH TYNESIDE
Best mobile network in Cleadon SR6 · South Tyneside
O2 scores 100/100 — the best measured network for SR6 in Sunderland, 6 points clear of the weakest. 100% 5G-grade · 100% 4G. Ofcom Mobile Coverage data (May 2025), measured across 136 addresses in 6 sampled postcodes.
The SR6 district covers Cleadon, Fulwell, Marsden and Whitburn, in South Tyneside. Signal varies street by street — scan your exact postcode below.
RESULT · SR6 · SUNDERLAND
Coverage for SR6 district
★ BEST MEASURED
O2
100/100
O2 has the strongest measured coverage for the SR6 district in Sunderland, 6 points clear of the weakest network in Ofcom's data.
Full ranking — SR6
#1
O2
#2
Three
#3
Vodafone
#4
EE
Coverage analysis — SR6
Drawing on Ofcom's sampled address-level coverage, O2 comes out on top for Sunderland. In this densely populated urban area, O2 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.
O2 clearly leads Three by 0 points overall. While Three reaches 100% on 5G and 100% on 4G in Sunderland, it falls short of O2's combined performance across all bands. Vodafone and EE round out the field at 100 and 94 respectively.
Why O2 for SR6?
O2's 5G rollout in Sunderland is among the strongest nationally, covering 100% of premises in the SR6 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 SR6 is Three at 100/100 (100% 5G / 100% 4G). It is a close contest — both operators deliver strong coverage in SR6, and your choice may come down to tariff, handset preference, or existing contract.
Switching to O2 in Cleadon
O2 has the strongest measured signal here — 100/100, with 100% 5G-grade and 100% 4G coverage across Cleadon, Fulwell, Marsden and Whitburn, 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 Sunderland area
View full coverage analysis for the Sunderland (SR) area, or enter any UK postcode in the scanner above for a personalised result.
Coverage FAQ — SR6
Q2
Is 5G available in SR6?
O2 provides excellent 5G coverage at 100%. Three follows at 100%.
Q3
Which network has the best 4G?
O2 leads 4G too at 100%. Reliable 4G is critical in densely populated urban areas.
Q4
Is Vodafone worth considering?
Vodafone scores 100/100 in SR6 (100% 5G, 100% 4G). It may suit certain tariff or price preferences despite trailing the top two.