Line of Duty series six: Who plays Detective Superintendent Ian Buckells?

The character came under suspicion on Sunday night (Picture: BBC/World Productions)*Warning: This article contains spoilers for Line of Duty series six*Line of Duty unmasked the Fourth Man at the heart of corruption in the police on Sunday, with Detective Superintendent Ian Buckells turning out to be H.It’s a mystery that’s kept viewers guessing for years, but Ted Hastings (Adrian Dunbar), Kate Fleming (Vicky McClure) and Steve Arnott (Martin Compston) found the guilty man during the