“Ifeel like I’m moving into really wanky territory now,” says Mathew Baynton, looking a little anxious. We are talking about Ghosts, the much-loved comedy about a gaggle of spirits consigned to spend the afterlife in a crumbling country mansion, which Baynton co-writes and in which he plays a deceased Regency poet. After a triumphant five seasons, Ghosts officially breathed its last in October – except there’s now a Christmas episode on its way. (Last year’s Christmas special drew 5.9 million viewers, making it the BBC’s biggest comedy of 2022.) When I ask Baynton what it is about Ghosts that struck a chord with viewers, he worries he might sound pretentious. “But here goes,” he says. “I have learned that, as a writer, you don’t always know what you’re writing. There are the quite boring times where you have an idea and it comes out as you imagined, and there’s no mystery in that process. But when it’s exciting, you have an idea and it leads you to places you don’t expect.” With Ghosts, he and his co-writers initially imagined hundreds of spirits haunting Button House, which would have allowed them to tell different stories with a new set of characters each week. “But when we looked at the taster tape we made, we all went: ‘Hang on, there’s something much richer here,’” Baynton continues. “We realised it was a show about people being stuck together, potentially in eternity, and how they find ways to get along. All of which is to say that I’m enamoured with Ghosts too because, right from the get-go, we had absolutely no idea what it would become.” Baynton, who is 43, is talking from his study at home in north London where he lives with his partner, the film historian and film-maker Kelly Robinson, and their two children. He is self-effacing and thoughtful, choosing his words carefully and, at intervals, wondering if he could be expressing himself better. “I think it’s partly the writer in me,” he says, “but I do come away from conversations thinking how I’d like to rewrite things I’ve said.” As an actor, Baynton has cornered the market in ultra-sensitive men who walk a fine line between pathos and silliness. Along with his lovelorn poet in Ghosts, there was his turn as a Victorian psychiatrist in 2017’s Quacks, who masterminds a new treatment for patients called “talking”; his lute-playing bard in the 2015 film Bill, about the early life of Shakespeare (“London is not going to know what hit it!”); and good Samaritan Sam in The Wrong Mans (2013-14), which he co-wrote and starred in alongside James Corden. With Wonka you’re on a set that probably cost the same as an entire series of Ghosts, but it’s still a comedy with a big heart But this winter heralds a new set of projects that Baynton has dubbed “my Christmas of villainy”. In Murder Is Easy, based on the Agatha Christie novel about a spate of killings in a sleepy English village, he plays a doctor who, he says, “is an awful person with some very awful views”. Next year brings A Good Girl’s Guide to Murder, based on Holly Jackson’s bestselling YA novel, in which a young true-crime enthusiast investigates a five-year-old murder case; Baynton can’t reveal too much, although he confirms his character is a far cry from the puppy-eyed romantics for which he is known. And in the Charlie and the Chocolate Factory prequel, Wonka, released in cinemas earlier this month, he plays the devious Fickelgruber, Wonka’s Brylcreemed rival in the confectionery business. Baynton can’t account for this sudden pivot into treachery beyond the fact that “a few [casting directors] had the same idea at the same time … Acting is strange like that. You do one notable thing early on and you are put on a track that for 10 years that can be hard to get off. Perhaps baddies are my new type.” Wonka was co-written by his friend and Ghosts compadre Simon Farnaby (who also co-wrote Paddington 2) and was filmed at Warner Bros Studios in Hertfordshire. For Baynton, it “felt like you were with the same kids but in a plush playground … Even though you’re working with this huge Hollywood star [Timothée Chalamet, who plays Wonka] and you’re on a set that probably cost the same as an entire series of Ghosts, it’s still a comedy with a big heart, so for me it felt like home.” Baynton and Farnaby first came together on the set of Horrible Histories, the anarchic children’s sketch show that recreated history’s most ludicrous and bloodthirsty moments, alongside Martha Howe-Douglas, Jim Howick, Laurence Rickard and Ben Willbond. Shortly after it finished its decade-long run, the six of them wrote the madcap puppet comedy Yonderland, largely because “we couldn’t bear that we weren’t going to get together for more mucking about in front of the camera”. This was followed by Bill, and, four years later, Ghosts. They have even given themselves the collective name Them There, mostly for production credits, though “no one actually calls us that”. Aren’t they more Britcom’s answer to the Brat Pack? “I don’t know about that,” Baynton says, bashfully, “though it depends on which of them you think I am.” The youngest of three children, Baynton grew up in Southend on a diet of sea air and his dad’s Monty Python cassettes. He reckons being lowest in the pecking order at home contributed to his desire to perform and be noticed. In his teens, he went through a morose period during which he was overtaken by self-consciousness, but then he discovered theatre via a production of Bruno Schulz’s The Street of Crocodiles by Theatre de Complicité “which moved me to tears in ways I couldn’t understand and ignited something in me. I knew I wanted to be in that world in some way.” Baynton went on to drama school, where he studied directing, but when he got there he realised acting was his calling. He spent a summer as assistant to Cal McCrystal, then director of the physical theatre group Peepolykus, who pushed him to join in with improv games. Later he went to Paris to study under the renowned clown Philippe Gaulier, which cemented his love of slapstick. Upon returning home, McCrystal gave him his first break on the stage in a production of Joe Orton’s Loot. But it was Horrible Histories that really opened doors for Baynton, both as an actor and writer. On being offered the job, he nearly turned it down, fearing that he might get stuck doing nothing but children’s TV, but his agent persuaded him to take the job by telling him: “No one will see it.” In a talk last year at the Oxford Union, Baynton remarked how, were they making it today, they would do certain things differently, such as not using white actors in tanning makeup to portray Egyptians. “I think it’s important that we examine where the line is [around portrayals of other cultures],” he says now. “It’s a murky area where intention sometimes doesn’t match reception. Certainly, no one had bad intentions making Horrible Histories and none of us at that time, in the culture as it was, hesitated and thought: ‘Hang on, maybe I shouldn’t play an Egyptian.’ But times have changed and I would hesitate now.” If the odd Horrible Histories sketch hasn’t aged well, it is worth observing the sensitivity and inclusivity that runs through Ghosts. Baynton notes how throwing together characters from different historical periods allowed them to “highlight wrongful attitudes and interrogate how they had arrived at them. At one point, there’s a gay wedding at Button House and [the ghost of] Lady Button is appalled and goes on this journey in which she faces her own homophobia. When we were writing that story, it felt like I was having a conversation with my homophobic nan.” Baynton is content moving between acting and writing, not least because “if I’m between acting jobs, it means I get to dream up new projects for myself and my friends”. Keen to avoid any signs of egotism as his career soars, Baynton keeps his feet on the ground by recalling the “pure dystopian hell” of his time as a school leaver working in a call centre. There, every second of the day was monitored and he was once upbraided by a manager for taking too many toilet breaks. “So when I’m on set in a scratchy costume or I’m feeling a bit tired and thinking what a terrible time I’m having,” he says, “I remember that time, and what a privilege it is do what I do.” Wonka is in cinemas now; Ghosts airs on Christmas Day, 7.45pm, BBC One; Murder Is Easy, 27 Dec, 9pm, BBC One; A Good Girl’s Guide to Murder airs next year on BBC Three.