Line Of Duty star Martin Compston has admitted he once accidentally leaked a mammoth show spoiler while he lived abroad.

The LOD star, who plays Steve Arnott in the BBC drama, accidentally let the cat out the bag during series three when he revealed Keeley Hawes’ return as Lindsay Denton – an hour before the episode aired.

Martin will discuss the major blunder on tonight’s episode of Redknapp’s Big Night Out, with Jamie and Harry Redknapp, comedian Tom Davis and Daisy May Cooper.

Explaining how it happened, the actor said: "I was living in LA at the time and I think it was when Keeley Hawes came back so I put out "she’s back everybody" but I forgot the clocks went forward in the UK so I put it out at 8 and the show came on at 9."

"Luckily everyone was going "what the f**k are you on about?" From that moment I’ve got the fear big time."

As the final Line of Duty episode comes to a dramatic end this Sunday, many fans have been hopeful of a seventh series. But Actor Martin, who’s appeared in all six seasons hinted that it might not happen.

While speaking on the Shrine Of Duty podcast, the 36-year-old said: "A lot of big answers coming. I think it’s deserved, people have stuck with us for such a long time there comes a point when the natural story arc is coming to an end."

"We’re in a situation where it’s not entirely clear that there will be a seventh series," he explained.

"It’s different elements this year, because we have to look at it in terms of, do people want us back? You don’t want to overdo it. 10 years in you start to think of legacy, and if it goes down that well it might be the perfect ending.”

"‘But then we might go another couple of months and… what I will say is we won’t do one just for the sake of doing it."

He then went on to explain writer Jed Mercurio's process: "We don’t know [if there will be another series]. That’s nothing new. Jed [Mercurio] will only do it if there’s a story to be told.

"Jed always takes time after a series, like a couple of months. There’s a lot of stuff above my pay grade like analytics and audience scores. He takes the emotion out of it and looks at all that."

Martin also seemed to confirm this again on Redknapp’s Big Night Out and said: "This might be the last one – you need to enjoy it."

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