PICK OF THE DAY PILGRIMAGE: THE ROAD TO THE SCOTTISH ISLES

★★★★

Seven famous faces follow in the footsteps of St Columba, a key figure in early British Christianity. Their spiritual journey will take them almost 1,000 miles, from Donegal in Ireland to the Hebridean isle of Iona. Collectively, the pilgrims have diverse faiths, but are all friendly and open-minded. Nick Hewer (front row, left) describes himself as a ‘soul in flux’, while pagan Laurence Llewelyn-bowen (back row, second left) is especially entertaining, embracing the spirit of adventure even if he isn’t exactly dressed for it.

9PM, BBC2 GARDENERS’ WORLD 8PM, BBC2

★★★★

With the daffs in full bloom, Toby Buckland explores the vast collection of heritage daffodils at Cotehele in Cornwall. We also visit a Birmingham couple whose experimental garden is a living art gallery, with cacti, ferns and air plants aplenty, while special guest JJ Chalmers cracks on with seasonal jobs.

CRUISING WITH SUSAN CALMAN 8PM, CH5 ★★★★

Susan waves goodbye to the Canaries as she sets sail for the beautiful island of Madeira, where she confronts her fear of heights for a cable car ride – and even she admits the spectacular views are worth it. Back on ship, she samples more of the many food options, before it’s onward to the Spanish port of Vigo.

GRANTCHESTER 9PM, ITV

★★★★

After a murder at an old people’s home, Geordie and Will are given the run-around by two of the least likely suspects you can imagine. Both policeman and priest face romantic dilemmas, too, as Geordie ponders his future with Cathy, and Will has to make a decision when Maya makes an unexpected return.