A leading rail firm issued apologies today to tens of thousands of commuters after a death at a station disrupted services for more than 12 hours.

South West Trains services on routes out of London Waterloo were delayed, cancelled or disrupted for most of yesterday following the incident at Surbiton.

The train operator said that a "major" computer failure across the UK rail network added to the disruption, meaning that train running information was unavailable from live departure boards, TrainTracker and other information systems.

South West Trains issued apologies at railway stations across its network today.

Meanwhile, Tube travellers in London suffered delays during this morning's rush hour when signal failures hit the Central, District and Piccadilly lines, while "line congestion" caused severe delays on London Overground.