They play on-screen rivals Detective Inspector Steve Arnott and his former boss Chief Constable Philip Osborne on Line of Duty.
But Martin Compston and Owen Teale make sure the drama remains on set as the co-stars enjoyed a day at the golf course on Sunday.
Martin, 36, who plays DI Arnott, took to Instagram and shared a snap of him and Owen, 59, who plays Chief Constable Osborne, enjoying him a day off from work.
Pals: Line of Duty’s Martin Compston and Owen Teale make sure their on-screen rivalry remains on set as the co-stars enjoyed a day at the golf course on Sunday
He wrote: ‘Amazing to get on a course on day off with the big fella, no caddy’s of course with Covid’.
Along with the golf term, Martin’s ‘caddy’ line also refers to character Matthew ‘Dot’ Cottan who previously worked as a caddy for OCG leader Tommy Hunter, earning himself the nickname ‘The Caddy’.
Fans of the series quickly commented on the post, with many joking the pair shouldn’t be hanging out together.
One user wrote: ‘Keep your friends close…’ while another said: ‘This picture feels illegal’.
Role: Martin, 36, (pictured) who plays DI Arnott, took to Instagram and shared a snap of him and Owen, 59, who plays Chief Constable Osborne, enjoying him a day off from work
Character: Owen (pictured) first appeared on the show first appeared on the show in 2012 before returning this year
Another fan added: ‘Watch your back he’s defo a baddun,’ while one viewer said: ‘The reaction I had to this pic was totally unreasonable.’
It comes after Eagle-eyed Line Of Duty fans are convinced they have solved the outcome of the intense shootout on Sunday’s episode between PC Ryan Pilkington and DIKate Fleming, after spotting a ‘dead body’ in a preview of next week’s episode.
The AC-12 undercover specialist, played by Vicky McClure and the show’s villain (Gregory Piper) drew their guns on last week’s show while screaming at each other to drop their weapons.
And as the screen faded to black at the end of the dramatic cliffhanger episode, two bullets could be heard firing.
Reaction: Fans of the series quickly commented on the post, with many joking the pair shouldn’t be hanging out together
But viewers appear to have deduced the outcome of the gun battle before the next instalment, after spotting a dead body which resembles Ryan.
Also, in another trailer which was released before the start of the new season in March, fans noted certain scenes including detective Kate which haven’t aired yet.
They were quick to point out one blink-and-you-miss-it scene which sees Kate standing next to Acting Detective Superintendent Jo Davidson, played by Kelly MacDonald.
Fans thus concluded the scene must happen in the aftermath of the shooting – indicating Kate survives.
Revealing: Line Of Duty fans claim they have solved the outcome of the shootout on Sunday’s episode between PC Pilkington and DI Fleming, after spotting a ‘dead body’ in a preview
One viewer took to Twitter and said: ‘Looks like a Ryan Pilkington lying dead in the lorry park from the trailer.
‘Did Jo have a gun and stop him? Did Kate shoot first? Is Kate alive? Did AC-12 arrive in time? So many questions from that unbelievable cliffhanger.’
Another fan concurred: ‘Ryan is actually shot dead (look at the body laying on the floor between the black van and the police car).’
A third viewer said: ‘Yes I’m that person who goes back and analyses the original trailer after each episode and isn’t this the location from the the last scene in tonight? There is a body on the floor. Ryan?’
Stand off: The AC-12 undercover specialist, played by Vicky McClure (pictured) and the show’s villain (Gregory Piper) drew their guns on last week’s show in a nail-biting cliffhanger
Dramatic: After screaming at each other to drop their weapon the screen faded to black and two bullets could be heard firing (Ryan pictured)
A fourth viewer added: ‘But we know Kate and Jo aren’t dead because we’ve seen clips of them in the trailers that haven’t been aired yet #lineofduty.’
Another Line Of Duty fan said online: ‘#LineofDuty I am hopeful for Kate as the original trailer for the series had Kate and Jo with their hands in the air with Steve pointing his gun at them.
‘They were wearing the clothes they had on in the last scene!’
Detective work: Sleuth Line Of Duty fans shared their theory over who survives the shootout, noting scenes which appeared in trailers but are yet to air in the series