In the recent Ookla tests, Three Mobile emerged as the top performer among the major mobile providers in the UK, showcasing impressive download speeds ideal for on-the-go streaming enthusiasts. Three claimed the lead spot with an average download speed of 214Mbps, significantly surpassing its closest competitor by over 80Mbps. This speed is double the UK’s fixed-line broadband average, highlighting Three’s exceptional performance.

Vodafone secured the second position in the rankings, followed by EE in third place, while O2 lagged behind with the slowest speeds across all categories. Ookla confirmed Three as the Fastest 5G Network in the UK for Q3–Q4 2025, based on its Speed Score metrics combining download and upload speeds with latency for an overall speed assessment.

Key Ookla results include:
– Overall Speed Score: Three (53.46), Vodafone (43.05), EE (36.73), O2 (30.70)
– Median download speeds: Three (214Mbps), Vodafone (129.78Mbps), EE (97Mbps), O2 (78.92Mbps)
– Median upload speeds: Three (13.8Mbps), Vodafone (10.78Mbps), EE (10.96Mbps), O2 (8.28Mbps)

Although mobile network testing is complex due to varying user locations and network conditions, the results position Three at the forefront. With the recent merger of Three and Vodafone, the newly combined entity, VodafoneThree, aims to enhance mobile network quality through an £11 billion investment, potentially leading to improved performance nationwide.

Post-merger, VodafoneThree has commenced network integration using “Multi-Operator Core Network” technology, enabling seamless connectivity between Vodafone and Three networks at no additional cost. This integration could result in broader coverage and enhanced performance for customers across the UK.