A new study by communications regulator Ofcom has revealed that mobile network performance on UK trains is often poor, leaving passengers 'off grid' during their journeys. The research tested mobile performance across 24 segments of key railway lines in England, Scotland and Wales, assessing video calls, streaming and social media use.
Ofcom found that mobile performance was poor on between 58% and 83% of tests. EE performed best, meeting standards on 42% of segments, followed by Three (21%), O2 (20%) and Vodafone (17%). The London Victoria to East Croydon line had the best connectivity, while Basingstoke to Coventry (via Reading and Oxford) scored lowest.
The regulator attributed the issue to weak mobile signals from masts near train lines and carriage design that hinders signal penetration. Rural and intercity passengers experienced worse service than urban travellers, and performance declined at peak commuter times. On-board wifi performed well only 1% of the time due to outdated technology and limited speeds.
Ofcom is calling on mobile companies, local authorities, developers and the government to improve connectivity. Natalie Black, Ofcom’s group director for infrastructure and connectivity, said: 'People rightly expect connectivity they can count on — and delivering it will require a joined‑up national effort.'
BT, owner of EE, noted its £40 billion investment in UK networks and said EE offers the most reliable rail experience, but acknowledged more progress is needed. It called for better collaboration between train companies, network operators, Ofcom and the government to achieve lasting improvements.
