Grand Tours Of Scotland’s Lochs (BBC2, 7.30pm)

NEW series. Paul Murton returns to explore more of the nation’s lochs, beginning by heading to Wester Ross to find out about the heritage of Little Loch Broom. He then travels to the off-grid community of Scoraig, where he learns about

violin making and wind power, before taking the plunge to explore the hidden depths of Corrieshalloch Gorge. In Ullapool, on the shores of Loch Broom, Murton learns the Russian word for parsley, and how a huge fleet of Russian fish factory ships known as Klondykers used to visit the town.

Saving Lives At Sea (BBC2, 8pm)

THE documentary telling the story of the unpaid volunteers who sacrifice their free time to staff more than two hundred RNLI lifeboat stations across the UK returns with a particularly dramatic episode. It sees the volunteers racing to the rescue of a shark-attack victim, while two fishermen caught by the tide find themselves stranded in a rising sea. Elsewhere, two young boys are swept out to sea in a rip current. The episode also explores some of the sacrifices the volunteers make – as well as braving dangerous conditions, they’re also jeopardising their social lives.

Kevin McCloud’s Rough Guide To The Future (C4, 9pm)

KEVIN McCloud sends three celebrities around the world to take a light-hearted look at some of the planet’s biggest issues and the technology that could offer solutions. In the final episode, Jon Richardson travels to America to learn about the latest advances in technology that claim to prolong life, and Phil Wang goes to China to explore how technology is enabling new ways for people to earn a living. Elsewhere in Japan, Alice Levine learns about the robots that are becoming as advanced as humans.

The Hairy Bikers’ Chocolate Challenge (Channel 5, 10pm)

THIS week, the budding chocolatiers are challenged to make a supersize bar with bite-sized pieces with lots of texture, as well as getting to use some of the latest chocolate-making gadgets – which do not always work as intended, leading to some unexpected meltdowns.