Katie McGrath has promised that the final ever episodes of Merlin will conclude the series in a satisfying way.

She told Digital Spy: “The last two episodes really answer all the questions that have been posed throughout the past five years. Everything’s tied up, every character has an end in some way – from Gwaine (Eoin Macken) to Percival (Tom Hopper) to Morgana to Merlin (Colin Morgan).

“There is an ending where everybody can say, ‘Yes – now I understand’. The journey is finished, the characters’ arcs have come to an end and, as a viewer, there’s something very special about being involved from start to finish with a character and seeing them all the way through. I think the last two episodes are really strong, and they do that.”

She also spoke more about the decision to end the show: “Well, it was kind of always the plan. If you go back and look at whenever Johnny and Julian were asked, we only ever were aware that we were going to do five series. They had planned out the stories for that – the character arcs, everything had been planned for five years – and we were lucky that the BBC let us do that and thought it was important that we tell the story in its entirety, from start to finish, rather than keeping it going.

“There would be a tendency, I think, if we kept on going, to repeat ourselves, and now it’s going to hopefully going to finish really strong and answer everyone’s questions. It’s a real privilege to be able to do that, to be honest. I know it’s very rare that it happens.”

Moving on to a potential Merlin movie, McGrath, like her co-star Colin Morgan, doesn’t appear too keen: “There’s been a lot of talk about it over the past couple of years, and I could never understand what story we could tell better in a two-hour movie that we haven’t already told in 65 hours of TV. It’s been such a privilege to have that time to grow a character and see her through to the end, and the most wonderful thing that we have been privileged to do is to be able to tell the end of the story.

“That for me has been really important and I don’t say it lightly when I say I’ve been privileged to tell this story from the start to the end. But I can’t imagine what story they would tell [in a movie] that we haven’t already. If they can come up with a story that I feel like we’ve missed out in those 65 hours, I’ll be like, ‘Absolutely – let’s do it’, but I can’t think of what it would be. But to be honest, any chance to spend time again with Bradley, Colin and Angel, I’ll probably jump at in a heartbeat – I don’t care what it is. Pantomime in Woking, I’ll do it!”