Doors open on moving Tube

Union leaders have called for an investigation after the doors of a packed Tube train opened between stations in West London.

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Tube train doors open between stations on Piccadilly line

The doors of a packed London Underground train have opened between stations in West London.

The Piccadilly line train was travelling to Heathrow on Sunday Credit: Press Association

The Rail Maritime and Transport union claims a baby in a buggy was close to the door that partially opened on the Piccadilly line train on Sunday.

The union says the incident raises questions about the reliability of the trains, which it says are 40 years old but were not due to be replaced for another decade.

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