Just as we're breathing a sigh of relief, a train comes the opposite way and crashes right through it.

BBC: NEWS | UK | Magazine | What happened to slapstick?

Mr Knight thinks that although it is a relief to have an end date that train operators have to work towards, the important thing is make sure that the regulations are watertight.

BBC: Photo of wheelchair user on tube platform

About 20 RAF personnel have pulled an "Ivor the Engine" steam train more than 50 metres in aid of Comic Relief.

BBC: RAF Benson team complete Comic Relief steam engine pull