Fred visits the North East, a region rich in transport history, to explore the development of Britain's railways, from the first steam locomotives to the record-breaking Mallard. A visit to York's National Railway Museum offers the chance to ride a replica of Stephenson's Rocket, while at Ffestiniog Railway he learns about the computer-aided design process used for new locomotives

Robbie Cumming concludes his journey by travelling from Barton Swing Aqueduct to Liverpool Docks - but he experiences engine issues and a leaky boat along the way

For decades, UFOs have intrigued the world, but many scientists avoided studying them. In the US, after highly publicised sightings of unidentified objects by US Navy pilots, UFOs are moving out of the shadows and into the light as NASA pledges to study them scientifically. This programme follows astrophysicists and engineers using new technologies to investigate strange objects in the sky

Celebrities discuss their favourite works by Cezanne, including Raymond Blanc who uses his culinary knowledge to comment on Still Life. First broadcast October 20, 2000

Part two of two. Following the challenges involved with building the Hinkley Point C in the remote Somerset countryside, the first new nuclear power station in Britain for a generation. This time, the team creates an extensive flood defence system to protect the site from a nuclear disaster like the one that befell the Fukushima Daiichi power plant in Japan. Elsewhere, cameras follow specialists as they work to uncover unexploded Second World War bombs that threaten the installation of the 4500-tonne cooling water intake heads

Warren's new-found lover calls it quits in a dramatic turn of events, while Egg's father provides a constant reminder of his own inadequacies. Only Anna sees through Jerry's self-pity and tells him to buck up his ideas - with surprising results. Drama, starring Jason Hughes, Paul Copley and Daniela Nardini

Egg gets a job delivering phone books, but doesn't have a car and finds himself forced to use a pram instead. Warren wallows in gloom and Miles deals with a man accused of revealing rather more of himself than decency permits. Andrew Lincoln, Jason Hughes and Jack Davenport star

Gabriel Weston explores the forensic advances that have elevated murder weapons from mere instruments to crucial pieces of evidence. She sees how arsenic, the undetectable weapon of choice in the 19th century, was exposed as the killer thanks to one simple chemical test, and finds out how distinctive marks on a victim's skull led to the weapon and, in turn, the killer. Gabriel also looks at the latest forensic developments, from 3-D laser scanning that can reconstruct the sequence of events at the scene of a gun crime to the pioneering chemistry able to determine where in the world someone has been based on just a few strands of their hair