Best mobile network in HA15 Harrow postcode district

Comparing Ofcom-verified operator coverage footprints, EE leads the field in Harrow. In this densely populated urban area, EE achieves an overall coverage score of 94/100 — driven by excellent 5G coverage (87%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE consistently leads Three by 5 points overall. While Three reaches 78% on 5G and 99% on 4G in Harrow, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 85 and 84 respectively.

EE's 5G rollout in Harrow is among the strongest nationally, covering 87% of premises in the HA15 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 HA15 is Three at 89/100 (78% 5G / 99% 4G). The margin is noticeable but not enormous. EE edges ahead on 5G depth; if your plan is with Three, 4G performance should still be solid.