Ben Miller on returning to Doc Martin and which character he still misses!

Ben Miller: "I’ve played Stewart twice before [in 2004 and 2005] and absolutely love him. We’ve seen him at various stages of his career, including when he was a ranger living out on Bodmin Moor and hallucinating a giant squirrel! Every time he comes back into the show you think he’s okay, but then he’ll suddenly start to lose it."

BM: "In this episode he’s got a new boss who wants him to take punters into the wilderness to do a survival course. He gets policeman Joe Penhale, played by Johnny Marquez, and Al Large, played by Joe Absolom, to trial the course, and the wheels come off in a big way! The surivial course is quite hardcore. He mis-sells it to Al as a version of glamping with gourmet cooking and luxury tents, but it definitely isn’t that. They're out in the woods foraging for food and sleeping in shelters they've made themselves."

BM: "Yes, we were in the woods for several nights right in the middle of Summer. It was quite an intense thing to film, miles and miles from anywhere. I’ve never done a survival course, nor do I intend to! The closest I've ever come was glamping at Carfest where you’re in a tent with a nice bed and duvet!"

BM: "You have all the fun and none of the responsibilities! Plus there are a lot of dogs on Doc Martin, and I love having dogs on set! Acting can be a little bit nerve-racking, so when you turn up and suddenly there’s a dog licking your knees, that’s just great. It relaxes everybody!"

BM: "Even filming in a heatwave at night in a forest, while being shredded by mosquitoes and deer ticks was more comfortable than being in the Caribbean in summer in a wool suit! That said, I still miss the character Richard Poole from Death in Paradise and I think I always will. 

"And I’ve no complaints whatsoever about Professor T, that’s an incredibly comfortable show to film. He’s an ivory tower man and it turns out that the reason people don’t like to leave ivory towers is because they’re very comfortable! I’m thrilled it’s back, the Professor is a warren of possibility. This year he goes into therapy with a therapist played by Juliet Stevenson."

"I know! It’s great, like all the buses.

"I’ve just finished filming This Christmas for Sky Movies, which is going to be out, well, this Christmas! I’ve got two books coming out. I write magical family stories for seven to 11-year-olds. 'The Night We Got Stuck in a Story', is about main characters Harrison and Lana discovering a hollow tree at the bottom of their grandparents’ garden that takes them into the bedtime stories their Nana reads. 'Secrets of a Christmas Elf' is the diary of Father Christmas’ daughter, Holly Christmas."

BM: "Yes, the squirrels are back big time! They take a slightly different form, but the motif continues and goes into new territory. 

"One thing we all love about Doc Martin is the eccentric characters. It’s the ultimate fish-out-of-water comedy. I'm going to really miss it, but it’s a good idea to go out on a high."