Siobhan Finneran

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).

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.

Derren Litten's Costa comedy is, as you'd hope, growing old gracelessly. At its heart is still the crabby marriage of Mick (Steve Pemberton) and Janice (Siobhan Finneran) as they take their umpteenth break in the Spanish sun, although these days Janice's mean-spirited mum is married to local mobility-scooter king, Mel, and hanging out at his lavish villa in a Jacuzzi. Mel was played by Geoffrey Hutchings, who died earlier this year, but this one-off finds a touching way to deal with his passing. As farcical storylines collide, a sad tale bubbles away off-screen.

It's brash, bold and, despite its poor innuendos and obvious crudeness, at times quite brilliant in its sending-up of the working-class stereotype of the popular Spanish tourist destination. In tonight's second episode of the third series, Mick (Steve Pemberton) and Janice (Siobhan Finneran) are having relationship troubles and Brandy (Sheridan Smith) plays a practical joke on the bumbling Martin (Nicholas Burns).

As ex-magician Greg Wilson's solicitor tells him after he's been charged with assaulting a woman in the Kingdom of Couches-esque sofa warehouse in which he works, "The law can be a very sexist environment. It's very difficult for women to prove themselves. Especially the ugly ones." Written by Toby Whithouse, whose CV includes Doctor Who and No Angels, this chucklesome, misanthropic comedy has Martin Freeman as Greg and features the excellent Siobhan Finneran and Phil Davis.