Cornwall And Devon Walks With Julia Bradbury (STV, 8.30pm)

FROM the wilderness of Dartmoor to the soaring cliffs of Land’s End, this new series takes viewers to parts of the West Country that can only be explored on foot – from beautiful beaches to remote wilderness, ancient woodlands to winding estuaries. Julia begins with a 6.5-mile route on Cornwall’s most westerly point, visiting Land’s End, the famous white sands of Porthcurno beach, the historic cliff-top Minack Theatre and Sennen Cove.

The Truth About Boosting Your Immune System (BBC1, 9pm)

THE coronavirus pandemic has pushed our immune system centre stage. But how much do we all really know about how to keep it strong? Dr Ronx Ikharia, an emergency medicine doctor, delves into the latest science to find out what we can all do to make our immune system as healthy as possible. Ronx and professor Sheena Cruickshank, an immunologist at the University of Manchester, give a group of volunteers an “immune makeover” – changing their diet, exercise and sleep habits for six weeks to test the impact on their immune health.

Grand Designs (Channel 4, 9pm)

THE property show returns for a new run, as Kevin McCloud follows more of Britain’s most ambitious self-build projects. Former army captain Justin has spent £1.8 million on an abandoned neo-Gothic cemetery keeper’s lodge and adjoining former council toilet block in south-west London. Justin’s vision is to restore the lodge but demolish the ugly toilet block and replace it with an enormous luxury ground floor extension, with added moat and giant basement with a swimming pool.

Salvage Hunters: Classic Cars (Quest, 9pm)

SALVAGE aficionado Drew Pritchard and Paul Cowland are back for a fifth series as they scour the UK, buying, restoring and selling classic cars. Tonight, Paul wants to buy a Citroen DS, but Drew has reservations. This banged-up front-engine, front-wheel-drive executive car is priced at £6500, which Drew feels is a bit pricey bearing in mind how much work needs done on the vehicle. Will the guys take it on, and if they do, will they make a profit?