Best mobile network in HA8 Harrow postcode district

Cross-referencing EE, Vodafone, O2 and Three using Ofcom 2024 data, EE comes out on top for Harrow. In this densely populated urban area, EE achieves an overall coverage score of 92/100 — driven by strong 5G coverage (83%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE clearly leads Three by 5 points overall. While Three reaches 75% on 5G and 100% on 4G in Harrow, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 84 and 84 respectively.

EE's 5G rollout in Harrow is among the strongest nationally, covering 83% of premises in the HA8 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 HA8 is Three at 87/100 (75% 5G / 100% 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.