A steam train built more than 100 years ago took to London's Underground system last weekend.
Transport for London is operating a service on 13 January to commemorate 150 years since the first London Tube journey.
A test run took place in the early hours of a Sunday morning in
preparation for the 300 passengers who applied for tickets through a
Peter Hendy of Transport for London, Sam Mullins of London
Transport Museum and train driver Jeffrey Phelps feature in the report
by BBC London's Sonja Jessup.
Link from Tony Wilson