Ofcom exposes UK rail mobile coverage gap

Ofcom says mobile service on trains remains poor after testing 24 railway segments across England, Scotland and Wales. EE reached Ofcom's usable-service benchmark on 42% of tested rail segments, while Three, O2 and Vodafone reached it on only 21%, 20% and 17% respectively. The finding signals that rail connectivity is not only an operator coverage problem, but also a planning, infrastructure and spectrum coordination issue.

• EE reached Ofcom's usable-service benchmark on 42% of tested rail segments
• On-board Wi-Fi performed well just 1% of the measured time

The fact

UK regulator Ofcom says mobile service on trains remains poor after testing 24 railway segments across England, Scotland and Wales. It defined good performance as enough speed and latency for video calls, streaming and social media use. EE reached that benchmark on 42% of tested rail segments, while Three, O2 and Vodafone reached it on only 21%, 20% and 17% respectively. On-board Wi-Fi performed well just 1% of the measured time.

The Assessment

Ofcom is using the rail tests to show that weak mobile service is not just a coverage complaint, but a delivery problem in places where networks are hardest to reach. The regulator is also making clear that operators cannot solve this alone, because carriage design, trackside geography, planning approvals, indoor infrastructure and spectrum availability all affect performance. That puts more pressure on operators, local authorities, landlords, government and Ofcom to coordinate investment rather than treat rail connectivity as a standalone network issue.

What to Watch

Watch Ofcom's 27 July consultation, its monitoring of Vodafone-Three's £11bn investment pledge, and whether government rail connectivity plans, satellite trials or extra spectrum become tied to measurable service targets.

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