Today's TV: Join Bradley and Barney Walsh, Nick Knowles and Davina McCall

THE critically acclaimed improv show returns for a new third series. Ghost Whisperer, Criminal Minds and Friends actress Aisha Tyler is once again the host, with Ryan Stiles, Wayne Brady, Jeff Davis and Colin Mochrie joined in the first episode by guest comedian Cedric the Entertainer, who is perhaps best known for his role in Barbershop. Then, in the second part of tonight’s double bill, the regulars put their comedic skills to the test alongside Australian actress and model Adelaide Kane, who starred in Neighbours and supernatural teen drama Teen Wolf.

Bradley & Barney Walsh Breaking Dad

Bradley & Barney Walsh: Breaking Dad (ITV, 8pm)

The last in the series of dad Bradley and his lad Barney’s adventures around Europe, and there’s no sign that Barney will cut his old man some slack for the final leg. The pair are in Italy, where all roads lead to Rome – at least the one their camper van is on does, and they’re soon at the home of gladiatorial combat where they take up weapons and learn to unleash their inner Russell Crowe. Next up it’s a trip south to the Amalfi Coast, where Barney plans a spot of cliff-top diving into the ocean for him and his put-upon dad. Along the way they make a quick stop to take in a spectacular view. Sound a bit too sedate for thrill-seeker Barney? Well, their vantage point is a sky-high zipwire. Good luck, Brad…

DIY SOS The Big Build

DIY SOS: The Big Build (BBC1, 9pm)

Beat the winter blues with this edition of the renovation show filmed in scorching temperatures in 2019 – which means it also features the welcome (and now slightly alien) sight of large groups of people working in close proximity. The real joy, though, comes not from the sunshine or crowds, but the heartwarming story as it unfolds. Nick Knowles and the team are in Barnstaple in Devon, where they meet Jan and Lucy, parents to triplets. Two of the youngsters – Daisy and Amber – suffer from an incurable kidney disease which means they have to travel to Bristol – a four-hour round-trip – four days a week for dialysis, so Nick wants to help extend their home to create space for a dialysis centre.

Davina McCall in Long Lost Family

Long Lost Family (ITV, 9pm)

The 10th series wraps up as hosts Davina McCall and Nicky Campbell help more people trace their roots and finally meet up with family members, and it goes out in dramatic fashion as a woman hopes to finally solve a long-standing family mystery. Foster carer Susanne King grew up with her strict grandparents, as an only child and estranged from her mother. One day she overheard a family secret – that she had two sisters who had been given up for adoption. Can Davina and Nicky track them down?

Undercover Police Hunting Paedophiles

Undercover Police: Hunting Paedophiles (C4, 9pm)

The National Crime Agency estimate that there could be 300,000 people who pose a sexual threat to children in this country, and this hard-hitting series follows the harrowing work of the people tasked with preventing this harm. In episode two, we meet ‘Kiera’, a 13-year-old girl from Essex who, like many her age, is looking for friendship online. However, ‘Kiera’ is actually a middle-aged male police officer who, within minutes of setting up a profile, is bombarded with sexual messages. This is hard but essential viewing.

Compelling documentary series lifting the lid on the night shift in A&E

A&E After Dark (C5, 9pm)

We rejoin the hard-working staff at Hull Royal Infirmary to follow more eventful night shifts. In resus, 64-year-old retired coach driver Paul is rushed in after falling onto fire-stoking tools. Dr Austin is concerned about his breathing and so escalates Paul to a full trauma status and sends him for a scan. With severe pain in his shoulder and stomach, could Paul have suffered internal injuries? Plus there’s 21-year-old Harris who was injured in a machete attack. He’s been brought in by police but is reluctant to wait for his results…