Scott & Bailey (ITV, 9pm)

THIS series should really be dubbed Scotch and Bailey’s due to the amount of alcohol being consumed by its characters (is there no Government initiative to persuade these babes in blue away from the demon booze?).

In the finale, writer and co-star Amelia Bullmore puts herself through the wringer as DCI Gill Murray who falls off the (paddy) wagon and hits the bottle at work in an effort to banish the nightmare of her kidnapping.

"It's a delayed reaction to the trauma and it's an occasional failure of her characteristic confidence. She can, on occasion, doubt herself. She tries to keep this to herself and manage in her own way. She's proud and unlikely to ask for help; likes to think she's not someone who needs it. It's Rachel (Suranne Jones) and Janet (Lesley Sharp) who begin to spot that something may be up and try and broach the subject,” says Bullmore.

She's penned four episodes in this eight-part series, but modestly insists it's not quite as an impressive a feat of multitasking as it sounds. "I've written as well as acted for 19 years now, so I don't see it as a shift from one to the other. I love doing both and hope to continue mixing them, but Scott & Bailey is the first time I've written for something I'm in.

"What makes it more straightforward than it might appear is I didn't devise the show. I was thrilled to get a part at the beginning and then, over time, to be asked to write for it. It's [co-creator] Sally Wainwright's world. They're the characters she developed. I've come to know it very well - I love the world and the characters."

She adds: "When I write for Scott & Bailey I just do my very best to look after it and honour the spirit of the show as Sally created it."

Although Bullmore insists she's never contemplated changing any of the characters, fans are about to find out whether she's been tempted to give herself a happy ending, even if there’s talk of retirement ahead.

Following the discovery of slaves on the Pritchard farm, Syndicate 9 is under more scrutiny than ever and Eve Prichard (Ellie Haddington of Foyle’s War fame) is determined to use Murray’s drink problem to discredit the entire investigation. As Janet is under something of a cloud herself, it’s up to Rachel (I’ll drink to that) to ensure the case is wrapped up.

The Apprentice (BBC1, 9pm)

THIS week, the would-be entrepreneurs are getting a second chance to prove that they are savvy when it comes to 21st-Century technology, as Lord Sugar challenges them to create their own online video channels to go live on YouTube. Once they've chosen their concepts - cookery demonstrations for one team, health and fitness for the other - it's time to join forces with some existing online stars in a bid to drive up the clicks. But it's when the candidates have to pitch to a website for promotion that one person goes a little over the top.

Grayson Perry: Who Are You? (Channel 4, 10.05pm)

TURNER Prize-winning artist, Grayson continues to explore the ideas of identity as he creates portraits of people who are at a crossroads in their life. He looks at why the idea of family remains so powerful. In the process, he meets people who test the boundaries of what some people consider a family unit to be, whether it's the Jesus Army or a white gay couple who have adopted a mixed-race child. But he also meets Christopher, who was diagnosed with Alzheimer's several years ago and is now looked after by his wife Veronica, prompting Grayson to ponder what happens to our identity when the memories that once bonded a family together are gradually stripped away.