In a recent assessment by Ookla, Three Mobile emerged as the leading provider for fast download speeds in the UK, surpassing its competitors. Three secured the top position with an impressive average download speed of 214Mbps, outperforming other major networks by a significant margin. This speed is double the average fixed-line broadband speed in the UK, highlighting Three’s superior performance. Vodafone claimed the second spot, followed by EE, while O2 lagged behind in terms of speed.
Ookla, confirming the results, stated that Three is the fastest 5G network in the United Kingdom for the Q3-Q4 period of 2025. The Speedtest Award for Fastest Network is determined by the Speed Score, which evaluates a network’s throughput and responsiveness based on download and upload speeds along with latency metrics.
Key Ookla results:
Overall Speed Scores:
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
While these results highlight Three’s superiority, it is important to note that testing mobile networks can be challenging due to varying conditions across locations. Factors such as user mobility, indoor versus outdoor use, and changing network conditions can influence speed measurements and hinder precise evaluations.
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