Line of Duty has revealed the "real H" in a special episode for Sport Relief.

DS Steve Arnott, DI Kate Fleming and Supt Ted Hastings returned to AC-12's interrogation room last night for the one-off special as part of the BBC's charity appeal. The trio were interrogating bent copper DC Taylor - played by Harry Potter's jAson Isaacs - about his involvement and his ties to 'H'. However, the arrival of DC Taylor's solicitor David Rickman (Lee Mack) threw a bit of a spanner in the works. In his attempts to defend "ACDC" Taylor, Rickman tampered with the evidence - and managed to incriminate his own client even more.  You can watch the scene play out below. It comes as Adrian Dunbar was recently speaking withToday FM about what fans can expect to see in the new episodes, which are set to debut in Autumn. "A lot of people did have the fear that I was H in Season 5, there's no doubt about that but they didn't want Ted to be the bad guy," he said, as he addressed the possibility of Ted being H. "I think Jed Mercurio was under orders not to make Ted the bad guy but you never know with him! Things could happen yet in the future but I don't think so at this point - I don't think that Ted is going to turn out as the bad guy, but you never know." Throughout the years, AC-12 have nicked bent coppers like D.I. Lindsay Denton, D.I. Matthew Cottan, D.C.C. Mike Dryden, Sergeant Daniel Waldron, and D.C.I. Roz Huntley, but Trainspotting star Kelly Macdonald is set to play their "most enigmatic adversary yet." "The landscape has changed, things have moved on with all the characters  and we have the great Kelly Macdonald joining us - she's going to be fabulous in the role. I can tell you that it's edge of the seat stuff again, Jed has done a wonderful job in writing the next series and it's going to be great. Steve is having a lot of trouble. Steve is having a lot of physical problems that came from his bad fall.  Poor old Steve, he's going through it," he added.