Line of Duty creator Jed Mercurio and star Martin Compston have commented on the season six finale that has left many fans underwhelmed, thanking them for sticking with the series.

In the aftermath of the 'H' reveal, and the news that Sunday night's episode on BBC One drew an average UK audience of 12.8 million - the most-watched episode of a drama in 20 years - Mercurio tweeted: "We're honoured and flattered by the viewing figures for #LineofDuty6."

"We knew attempting to explore the real nature of corruption in our society wouldn't appeal to everyone, but we do sincerely thank you all for watching," he added. "It's been our privilege to share your Sunday nights."

Compston, who plays DI Steve Arnott, tweeted: "Hey folks now the madness is slightly dying down just want to thank everybody who reached out about last night and the series as a whole, we've truly been blown away by the reaction and love for the show we're proud of it.

"Fully understand it wasn't the 'urgent exit' type ending some anticipated but we appreciate you sticking with us.

"Felt many emotions from excitement and anxiety at the hype to relief that it's over. Now I just feel immense pride our show that started on Wednesday's [sic] on BBC2 has just smashed every overnight drama record since they began.

"Finally myself, Vicky [McClure, co-star], Adrian [Dunbar, co-star] and Jed made an agreement in the inconceivable and ridiculous scenario we ever got twelve million viewers we would get 'AC12million' tattoos. We'll see who's good to their word......"

McClure, who plays DI Kate Fleming, added: "We are so grateful to you all. So much so looks like I'll have the ink to prove it!"

As creator, cast and crew celebrate their ratings success, the BBC is looking to the future.

Charlotte Moore, the BBC's Chief Content Officer, said in a statement: "Jed Mercurio is a master of his craft, and I would like to congratulate him and the entire cast and crew for delivering such an incredible drama series.

"I'm looking forward to having a conversation with the team about where we go next and what the future of the series might be."

Catch up on Line of Duty seasons one to five on the RTÉ Player.

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