On 10 May 2002, a passenger train derailed on defective points near Potters Bar station. Six passengers were killed, along with a pedestrian on the road below, who was struck by debris falling from an underbridge.

Points, trains and bridges are all assets, but so is almost everything on the railway – including the departures board, the signals and the seats in the carriages.

RED 62 explains how all these things link into a system and what the rail industry does to ensure asset integrity.