Upcoming episodes, programme details and where to watch over the next seven days. All times are UK time.
Behind the scenes of three preserved steam railway lines - the South Devon Railway heritage line, the Ffestiniog and Welsh Highlands Railway and the Great Central Railway.
At the Ffestiniog and Welsh Highlands Railway, manager Stephen Greig is trying to ensure that all goes to plan ahead of the opening of the new station at Caernarfon.
At South Devon, Ray Lee is working to bring a loco back in to service. There is a visit to the SS Kingswear paddle steamer In Dartmouth, the oldest vessel of its kind.
On the Welsh Highland Railway, trainee Claire Oates takes her driving test, while chef Alex and manager Michelle prepare a dinner for 130 people on the East Lancashire railway.
At the East Lancashire Railway, the annual Race the Train event gets under way - with athletes of all abilities taking on the 11-mile course from Bury to Rawtenstall.
Meeting the Welsh Highland Railway's oldest volunteer fireman, 80-year-old Cedric Lodge, who has worked on the railways for 60 years. In Devon, there is a look at the Autotrain.