The Spanish resort looks as unappealing as always in series four of this sitcom but there are a few changes among its denizens. Gavin has a new companion in the shape of Kenneth, an employee from his salon, while at the pool bar Mateo has a new colleague with a few surprises in store. Meanwhile, the Garveys arrive to stay at Madge's luxury villa, only to discover it's been sold to tonight's guest star... the illustrious Cilla Black.

Video: Cilla Black in 'Benidorm'

Cilla Black returns to ITV1 primetime tomorrow night. No, it's not a re-run of Blind Date or a revived Surprise, Suprise - the Scouse singer and TV presenter is actually turning up in Derren Litten's hit comedy series Benidorm.

With brassy characters, outlandish storylines and a sun-drenched setting, it's easy to see why Derren Litten's comedy drama has become so popular. It's back for a fourth series, although it's starting to lose its sparkle. New holidaymakers include portly hairdresser Kenneth (Tony Maudsley) and party girls Sam and Natalie (Shelley Longworth and Kathryn Drysdale). Meanwhile Solana stalwarts the Garveys (Steve Pemberton and Siobhan Finneran) return to track down a beleaguered Madge (Shelia Reid).

Karaoke and lacy bras in 'Benidorm'

The third interview in our week of Benidorm chats is with Shelley Longworth, who plays Sam, a new loudmouth rival for Madge at the holiday resort. We gave her a call back in cloudy England to find out more about her role and got the gossip on the cast's karaoke nights, her dodgy costumes and the ITV comedy's upcoming guest stars.

Tim Healy: 'My life in drag!'

From the sunny Spanish set of Benidorm, Tim Healy reveals the joys, and pitfalls, of portraying Les/Lesley in the hit ITV1 comedy.

Denise Welch teases 'Benidorm' cameo

Denise Welch has opened up about her one-off appearance in the new series of ITV1's Benidorm.

Cilla Black to star in Benidorm

There's a lorra-lorra surprises for the residents of Benidorm when Cilla Black buys a villa there.

Denise Welch to star alongside husband in Benidorm

Denise Welch admits she will be skating on thin ice at home with her son after she and her hubby both signed up for ITV comedy Benidorm.

In tonight's double bill from 2008, vinegary gran Madge (Sheila Reid) meets her match in hard nut Sylvia - Wendy Richard in her first role after EastEnders. Their High Noon face-off around the pool in cowgirl hats and mobility scooters is a comedy classic. Meanwhile, the overweight swingers have managed to break a second bed at the Solana Resort, despite not "really going at it" and Jacqueline (saucy Janine Duvitski) keeping "one leg on the vanity unit". Benidorm benefits from a terrific ensemble, but tonight's second episode belongs to Siobhan Finneran - on another planet from her wicked soap-dropping O'Brien in Downton Abbey. As put-upon mum Janice, she's astonished by the advances of a randy Jack the lad, then stuns everyone by serenading oafish hubby Mick (Steve Pemberton) with Dead Ringer for Love at the karaoke. Like a post-watershed Corrie meets Carry On Abroad, Benidorm's hilarious sun-drenched bawdry is the perfect antidote to January blues.