If you were going to invite anyone to your fantasy dinner party table, actor and writer Mark Gatiss would be perfect. He’d have some stories about the BBC’s The League of Gentlemen – perhaps letting us in on the secret of what exactly is Hilary Briss the butcher’s “special stuff” added ingredient. He could let you know what it’s like being Sherlock Holmes’ older brother Mycroft (and what their parents were thinking when they were dishing out forenames), after starring in and co-writing four series of Sherlock with Steven Moffat. Gatiss has also appeared in Game of Thrones and written and acted in multiple episodes of Doctor Who, playing a mad scientist opposite David Tennant, a creepy alien with Matt Smith and a first world war captain opposite Peter Capaldi.

On film (which is why we’re all here, of course), he has been in Shaun of the Dead, The Hitchhiker’s Guide to the Galaxy, Wallace & Gromit: The Curse of the Were-Rabbit, Dad’s Army (the 2016 film), Christopher Robin, Operation Mincemeat and now features in Mission: Impossible – Dead Reckoning Part One as the head of the NSA.

So, with all that to chew on, what would you like to ask the great man? Get your questions in here before 3pm on 17 July and we’ll print his answers in the Film & Music supplement on 21 July. But do remember: this is a local interview, for local people.