As part of their tour of interesting railway locations, Mark Found and Mark Collins meet up with globetrotting funnyman and train enthusiast Michael Palin

Mark Found and Mark Collins catch a ride on the mail train's night journey from London to Plymouth

Mark Found and Mark Collins visit the Docklands Light Railway in London as part of their trainspotting journey around the UK

The Avon Valley Railway and the London Transport Museum are among the sights waiting for intrepid trainspotters Mark Collins and Mark Found

Mark Found and Mark Collins visit a freight company on their countrywide search for delights from Britain's rich railway heritage

The journey reaches the Isle of Wight, where the intrepid travellers discover rolling stock from the old London Underground

Mark Found and Mark Collins visit world-famous locomotive the Flying Scotsman as they continue their search for the interesting and obscure from Britain's rich railway heritage

An examination of vandalism and trespassing on railways, actions that pose serious problems for today's train system

Mark Found and Mark Collins visit the site of major redevelopment work at London's King's Cross and St Pancras stations on their countrywide tour of railway locations

The intrepid travellers gain an insight into the British-led technology involved in the APT tilting trains