Amazing Spaces Special: 24 Hour Build, C4, 8pm

ACCORDING to a 600-year-old Welsh legend, if you can build a house with four walls and a roof and have a fire burning in the hearth in less than a day, the property and the ground beneath it is yours. Now, George Clarke is putting that folklore in action as he recruits a team of builders to help him construct a lakeside cabin using the natural raw materials from near Machynlleth in Wales. They have two days to prepare and one day to build – but will wild and stormy weather derail their plans?

Mo Salah: A Football Fairy Tale, C4, 10pm

VOTED the best player in England and a candidate for the prestigious Ballon d’Or, Mo Salah has had a stunning debut campaign for Liverpool. He became the first player to score 40 goals in a season for the club since Ian Rush during the 1980s and his performances have carried the Merseyside club to Saturday’s Champions League final against Real Madrid. This documentary charts the rise of Salah from humble origins in Egypt. There is footage of all of all his goals from this year’s dramatic European campaign, plus action from his time in Italy and Switzerland.

Manchester: The Night of the Bomb, BBC2, 9pm

MAY 22, 2017, should have been a peaceful spring night for music lovers desperate to see their idol. Then a Manchester-born man detonated a homemade bomb at an Ariana Grande pop concert, killing 22 people and himself. The atrocity at Manchester Arena was Britain’s deadliest terrorist attack since the London bombings of July 7, 2005. In this moving documentary, cameras reveal the story of that night through the eyes of teenage survivors and members of the emergency services.

Trains from Hell: Caught on Camera, Channel 4, 9pm

PSYCHOLOGISTS and rail industry experts discuss the anxieties and situations passengers experience in and around the railways. There is also real-life footage – ranging from the funny to the dramatic – showing what can go wrong on and off the train tracks. There are clips of near-misses, devastating derailments, rush-hour rage and on-board entertainment, all captured on cameras and phones.