The Restoration Man (Channel 4, 9pm)

THE Wearside-born architect George Clarke tells me he’s just moved into a period house of his own and his Restoration Man history is kicking in already.

“I am sitting here and thinking that I’ve got single-glazed windows and I’m going to change that but when the better weather comes in because I don’t want them pulled out in the winter. The windows are beautiful but I’m going to replace them with wooden sash double-glazed windows equally as beautiful.

“The insulation wasn’t done properly in the loft and that’s been done properly as well and I’ve put a smart meter in the house,” he says.

He’s talking with his British Gas head on as Clarke fronts a campaign to create warmer UK homes as I move the conversation around to the current TV series which has seen the TV presenter make several visits to the North. Last week, it was a disused Northumberland railway station. This week he meets restoration novices Mark and Laura who have embarked on a risky conversation in Harrogate involving two church buildings.. The idea is to convert a listed Sunday school building into a family home and use the profits from its sale to finance the transformation of a cavernous Victorian church into their own home. The first project gets off to a good start, but hidden costs start eating away at the finances required for a high-clash finish.

Clarke is aware that he's featuring home improvements on air and warmer homes for British Gas at one of the most problematic time for some home owners because of the recent flooding.

"It's a poignant time to be talking about it. Hopefully my advice can help people save a few pennies along the way by being less wasteful with energy and there are so many ways of doing that," he says.

* George Clarke videos on making homes warmer appear on britishgas.co.uk/the-source

Jericho (ITV, 9pm)

JOHNNY feels increasingly isolated as news of his true identity spreads like wildfire through the town, with Coates viewing him as a rival and even Annie keeping her distance. Meanwhile, as Charles faces financial ruin he is forced to go to wealthy preacher Jonas Sorsby, but when Annie discovers an ugly truth about the new investor, she takes matters into her own hands – only to find herself in a dangerous situation. Period drama, starring Jessica Raine, Hans Matheson, Clarke Peters, Daniel Rigby and David Westhead.

Clarke Peters, who plays Ralph Coates (not to be confused with the former Burnley and Tottenham footballer), moved to the UK in 1973 and first found fame as the creator of the West End and Broadway hit Five Guys Named Moe. On future writing projects he says: "There are just so many things I'd like to address. I'm trying to put all that together into something that's going to be important, educational and entertaining at the same time. I write a lot of short stoires but I've yet to put those out there. I've got a new musical idea too. It's about a group of artists who decide to get their own back on some really bad producers."

Death in Paradise (BBC1, 9pm)

DWAYNE (Danny John-Jules) attends the funeral of local barber Cedrik Verga and shortly after is puzzled to receive a message from beyond the grave – a text from the deceased claiming 'I was murdered'. Given that his phone was in the coffin, Dwayne wonders if this is a message from beyond the grave. Humphrey (Kris Marshall) agrees to investigate, and they soon find evidence to rule out his death from natural causes. Meanwhile, Humphrey demonstrates his culinary skills to Florence (Josephine Jobert)and the rest of the team because he's determined to prove that he can rustle up a meal to impress a woman... not that his hunt for female companionship is going any better than his system of taking down police statements.

Viv Hardwick