Career: Titchmarsh moved into editing gardening books, writing and broadcasting, and had a stint as a host on Pebble Mill at One on BBC One in the 1990s. He joined Gardeners' World as the main host in 1996 and Ground Force began a year later. After writing a number of horticultural books, he turned to writing novels. His first one, Only Dad, was published in 2001. More novels, gardening books and three biographies followed. He's also hosted the Proms, various series for Radio 2 and Classic FM and Love Your Garden. Despite retiring from The Alan Titchmarsh Show in 2014, he kept busy with writing and presenting commitments. TV shows he has presented since include Britain's Best Back Gardens, Masterpiece with Alan Titchmarsh and Love Your Home.

Career: Langford appeared in her first movie, Bugsy Malone, when she was 12. Other early projects include theatre productions and TV shows, including variety specials and Just William. At 17, Langford landed the role of Rumpleteaser in the original cast of Cats. Since then, she has put her singing and dancing skills to good use in Peter Pan: The Musical, The Pirates of Penzance, and TV's Saturday Starship and The Hot Shoe Show. She played Mel, an assistant to both the sixth and seventh Doctor Whos, between 1986 and 1987. She bounced back onto TV screens in 2006 when she was a contestant on Dancing on Ice. She made it through to the final and she also toured with Torvill and Dean's Dancing on Ice: The Tour in 2007. Since then, she has returned to the West End, playing Roxie Hart in long-running musical Chicago, and toured with Guys and Dolls. She has also appeared in Chicago in Canada and on Broadway. In early 2014, she participated with fellow former contestants in the final series of Dancing on Ice.

Career: Fisher's first big break came in 1978 on sketch show Scotch and Wry, before he moved on to The Naked Video in 1986, which saw him first don the string vest of Rab C Nesbitt. Two years later the layabout character had his own spin-off and Fisher became a household name. Following the rip-roaring success of Rab's antics another Naked Video spin-off was ordered called The Baldy Man. Once again Fisher would embody the title role, but this failed to strike a chord with viewers in the same way and the series was short-lived. In the early noughties Fisher breathed new life into his career by appearing in Richard Curtis' Love Actually (2003) as a manager to a fading rock star. His heartfelt portrayal proved that the actor could marry comedy with a more dramatic approach, as opposed to the brash uncompromising antics of Rab. The extremely successful ensemble comedy paved the way for more serious parts, such as playing Solanio in Shakespeare adaptation The Merchant of Venice (2004), and portraying Mr Bumble in Oliver Twist (2007). Fisher worked steadily throughout the rest of the decade, but he came to the fore again when he reprised his role as Rab C Nesbitt for another series in 2010.

Career: Mears' TV career began in 1994 with an appearance on the BBC's Wild Tracks series. He turned out to be a natural in front of the camera, which led to his own series, including World of Survival and Country Tracks, in which he showcased the ways in which we can use plants, trees and other natural materials. He's travelled across the world for his various BBC series (although he's since decamped to ITV) and is always keen to learn new survival techniques from the various indigenous people he meets. His knowledge of the wild and his ability to teach others how to live off the land, make him one of TV's most enduringly popular characters.