LINE of Duty's Martin Compston teased the crime drama could return for a seventh series – on one condition.
The Steve Arnott star, 36, spoke to Jonathan Ross alongside Kate Fleming actress Vicky McClure, 37, ahead of the hotly-anticipated series six finale this Sunday.
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Many fans are wondering if the popular BBC crime drama will return for another series once the dust settles on the current installment.
Martin didn't give much away but did hint at another series if there was an interesting story to tell.
He said: "We won’t come back just for the sake of it. That’s for sure. We’ll come back if there’s a story to tell.
"But, so as well, if it ends well maybe sometimes it is best to leave it. But, so, genuinely we don’t know.”
Vicky added: "Genuinely don’t [know]. We don’t know anything, not just saying it for effect."
Compston also lauded the fans for their support of the show, which first burst on to screens in 2012.
“Every year you worry, are we still relevant? Are people still going to be invested? Now we’re bigger than ever, getting new fans… it’s an intense period when it’s on," Martin explained.
"The reactions have just been great. All these wild theories… some are pretty close!”
On the show Martin portrays Arnott who is from the south, worlds away from his native Scottish accent.
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On his Line of Duty accent, Martin says: “It can be hard, that dialogue on its own would be hard anyway, throw the accent in there… the scene we did the other night, 30-pager, trying to juggle the accent at the same time.
When we’re away from it for a long time, when I do that voice I can hear him, it’s like a costume.”
Discussing one of the ways he keeps it up, Martin says someone records his lines for him to listen to.
He added: “I walk about all day with him in my ears. It’s just graft. I’m not naturally good at accents.
"I need to work harder, which then makes me better because I’m not complacent with it.”
Catch the season finale of Line of Duty this Sunday at 9pm on BBC One.
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