Channel 4 +1 Friday, 19 January Find out what's on TV.

Undercover Doctor: The Secrets of Your Big Shop

Full-time mum Natalie suffers with irritable bowel syndrome, and teacher Michael is known to his kids as 'beef bum' due to his toxic trumps and shocking bloating. Dr Michael ambushes them at the checkout, and starts them on a gut-busting food revamp.

Couples Come Dine with Me

Undercover Boss Australia

Domino's serve nearly a million pizzas a week in Australia. Having worked his way up through the company, Don Meij has been in the pizza business for over 20 years.

Countdown

Colin Murray and Rachel Riley host as contestants race against the clock to pit their wits against vowels, consonants and numbers. Prue Leith joins Susie Dent in Dictionary Corner.

Cheers

Woody must decide how to handle a former boxer's insult.

Cheers

Frasier and Lilith test their parenting potential on Carla's genius son.

3rd Rock From the Sun

Various social problems indicate Dick's plans to mould the team into an Earth family have exceeded expectations.

3rd Rock From the Sun

Dick gets locked in the stairwell of a high-rise while indulging his addiction to cigarettes.

The King of Queens

When Holly is kicked out of her apartment, Arthur insists she stay with him until she can find someplace new to live.

The King of Queens

Doug tries to pluck up courage to ask Carrie to let him go to Vegas with the boys, and Arthur visits a casino for orphans.

The King of Queens

When Carrie begins to stay late every night at work, Doug starts to feel neglected.

Frasier

Niles plans a perfect evening to pop the question to Daphne, hiring chef Wolfgang Puck to prepare dinner, and getting Martin to take her meddling mother out on a date.

Frasier

Frasier is leery when his scheming and scamming ex-brother-in-law rolls into town in a wheelchair claiming he's reformed and found God.

Frasier

Frasier's family and friends organise dates with various women whom they believe are guaranteed to sweep him off his feet. Niles sets Frasier up with Lisa, one of his patients, who owns a bookstore. Roz tries to partner him with artist Suzanne, though it proves a definite mismatch, and Martin introduces Frasier to Kris, an attractive girl from his building, who seems to know every man at the bar.

Channel 4 News Summary

Channel 4's midday news summary.

Four in a Bed

The first visit this week is to Abbey Court Guest House in Carlisle. Host Kelly aims to impress with plush rooms and abseiling. But will breakfast complaints send her chances off a cliff?

Four in a Bed

Glam couple Rob and Heloisa host at The Lime Tree Inn in Yorkshire, where chef Rob pulls out all the stops at breakfast. It's a shame the cleaners in Kelly's bathroom didn't do the same.

Four in a Bed

Visit three this week is to Holly Grove Farm in Staffordshire. Hosts Dave and Karon think that their rural glampsite is a tucked-away idyll, and their guests concur - apart from one...

Four in a Bed

The BandBers head to Lincolnshire for the week's final visit, where Pav hosts at his Beldon House BandB. Can he overcome his guests' grumbles about cleanliness and instant coffee?

Four in a Bed

One BandBer comes under fire on payment day for some suspicious scoring, while a confusing breakfast rating is high on the agenda for another. But most importantly, who's won the week?

Countdown

Colin Murray and Rachel Riley host as contestants race against the clock to pit their wits against vowels, consonants and numbers. Prue Leith joins Susie Dent in Dictionary Corner.

A Place in the Sun

Lorraine and Jon want to fulfil their long-held dream of owning a house in the whitewashed mountain villages of Axarquía in Spain. Jean Johansson shows them what their £110,000 can buy.

A New Life in the Sun

In Normandy, Clint and Carol do battle with a blocked toilet. In Andalucia, Tony and Bev prepare to unveil their art lounge to the public. And on the Costa del Sol, an equipment failure threatens to cause chaos at Karen and Phil's Sunday carvery.

Junior Bake Off

The four remaining bakers face the most regal final in Junior Bake Off history: Coronation Day. In the Technical Challenge, the bakers take on Rav's Charlotte Royale. Then the bakers must create the ultimate Showstopper, a cake fit for a coronation.

Four in a Bed

It's payment day, and emotions are running high as the B&Bers pour over their feedback. The guests agree on some things, disagree on more, and debate their differences before the payments are revealed and the winner is announced.

The Simpsons

When Retirement Castle is closed, Marge asks Grampa and two other octogenarians to move in. Meanwhile, Nelson befriends Bart after Bart defends him.

Channel 4 News

Includes sport and weather.

Extraordinary Extensions

In Peckham, Tinie joins an entrepreneur as he lets a graffiti artist and a massive living jungle-wall take over his Victorian house. And a couple with a fraction of a budget attempt to extend their distinctive 1960's Essex home without ruining it.

8 Out of 10 Cats Does Countdown

Jimmy Carr hosts the anarchic letters and numbers mash-up, with `Countdown' regulars Susie Dent and Rachel Riley. Joe Wilkinson and Rob Beckett take on Sarah Millican and Jamali Maddix, while Glenn Moore joins Susie in Dictionary Corner.

Jimmy Carr's I Literally Just Told You

Jimmy Carr hosts the game show where paying attention pays off. With £25,000 up for grabs, players are quizzed on things that have happened during the show. Whoever remembers the most takes home the jackpot.

Sarah Milican Home Bird Live

Award-winning comedian Sarah Milican performs to her home crowd at the Newcastle Tyne Theatre, talking about settling down, the need to put down some roots now that she has cats, and even a tree.

Big Boys

It's Jack's dead dad's 60th birthday party, and the gang are grappling with having nowhere to live for second year. Jack has an eye-opening gay encounter in the toilets.

Big Boys

Jack and Danny desperately try to pull a fresher. Corinne and Yemi succeed in their sexual pursuits. And Peggy convinces Shannon to contact her mystery one-night stand.

The Darkest Minds

When teens mysteriously develop powerful new abilities, they are declared a threat by the government and detained. One of the most powerful young people, Ruby, escapes from her camp and joins a group of runaways who are seeking a safe haven. Betrayed by the adults in power, this newfound family soon realises that running is not enough -- they must use their collective powers to wage a resistance and take back their future.

Come Dine with Me

In Glasgow, 48 year-old business manager Alison Bennett is first up to host. Having lived abroad, Alison is hoping to whisk her guests away to the Orient as her menu tries to recreate the authentic `Thai experience' of her favourite restaurant there.

Come Dine with Me

On the second night in Glasgow, local butcher Graeme Curley plans hopes to scoop the £1000 prize with his meat-fuelled evening. He's playing it safe with what he knows best - steak.

Come Dine with Me

It's the third day of the competition in Glasgow and host hairdresser Michelle Blackett is hoping to wow her guests with a menu of exceedingly well-appointed food. Will Michelle's presentation pass muster with her fellow Glaswegian gourmets?