Saving Lives at Sea (BBC2, 8pm)

NEW series. This documentary tells the story of the ordinary men and women of the RNLI who, across the country, are ready to launch their boats and race to the rescue within minutes of a cry for help, 24 hours a day, 365 days a year, whatever the weather. Over 150 years, the volunteers have saved the lives of more than 140,000 people – and here they set out to rescue others in trouble at sea.

The Martin Lewis Money Show: Live (STV, 8.30pm)

YOU don’t need to be a financial guru to know this is an awful time to be a saver. With some companies offering 0.01% gross after a tempting 12-month fixed rate bonus, the eponymous money man is urging folks to move their savings, or switch energy suppliers if they want to get more for their pound. And that’s just a fraction of the good advice Martin Lewis has to offer that could save us a fortune. Little wonder his website offering top tips for looking after the pennies is so popular. In this offering, with help from Angellica Bell, there’s the latest deals and all Martin’s tips and tricks for making the most of your cash.

The Real ‘Des’: The Dennis Nilsen Story (STV, 9pm)

FOLLOWING on from the three-part drama about the serial killer Dennis Nilsen, this documentary explores the personality of the man behind the crimes – a mild-mannered civil servant who admitted to murdering up to 15 young men over a four-year period in the late-1970s and early-1980s. The film includes footage of an interview Nilsen gave to ITV at Albany Prison in 1992, contributions from victims’ families and insights from criminologist David Wilson. Narrated by David Tennant.

How to Add 20k to Your Home (C5, 9pm)

LAURENCE Llewelyn Bowen and Linda Barker are a couple of the familiar faces offering tips on how and where to spend money on your house to maximise its value. From converting your garage into another bedroom or a dream cinema room, to installing a home office in the garden, there is no shortage of ways to transform your property. Craig Phillips also explores the DIY route option to help the viewer work out which bits of the work they can do to save money.