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Line of Duty fans spot something very wrong with the latest filming pictures for series 6

Line of Duty
(Image credit: ITV)

Have Line of Duty fans just worked out a big series six twist?

Line of Duty fans have spotted what could potentially be a huge spoiler after studying photos shared on Twitter by the show's creator, Jed Mercurio.

Fans have been waiting patiently for series six to hit their screens after filming was delayed due to lockdown.

And while filming is still underway, meaning the new series is still a way of airing, fans have been getting an insight into what to expect from the coming series as Jed shares behind the scenes pictures on his social media account.

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But the latest batch shared by Jed have revealed something surprising.

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Fans spot a spoiler?

Eagle-eyed fans have noticed that Martin Compston's character, Steve Arnott, isn't sporting his usual Sergent rank insignia on his uniform.

Line of Duty

Fans are worried that Steve Arnott has been demoted in series 6 after seeing this picture (Picture: Jed Mercurio/Twitter) (Image credit: Jed Mercurio/Twitter)

The mystery has left fans convinced that Steve could have been demoted to PC... something that would be a huge spoiler for the new series.

After spotting in one of the photos of Steve in his uniform one fan commented: "Has Steve been demoted?".

While another added: "Stevie boy demoted to PC?".

Line of Duty

Filming is well underway for series six of Line of Duty (Picture: Jed Mercurio/Twitter) (Image credit: Jed Mercurio/Twitter)

A third fan suggested that perhaps Steve could simply be undercover, which could explain the change in uniform.

Filming is well underway 

As well as showing Martin Compston in his role as Steve Arnott, the pictures also see Vicky McClure in her role as DI Kate Fleming, and Adrian Dunbar as the iconic Superintendent Ted Hastings.

Line of Duty

Cast and crew have been sticking to social distancing rules while taking a break from filming (Picture: Jed Mercurio/Twitter) (Image credit: Jed Mercurio/Twitter)

The cast could also be seen sticking to social distancing rules during their break from filming.

Line of Duty series 6 will air on BBC One in 2021 - see our TV guide for more shows to enjoy. 

You can catch up on series 1-5 on BBC iPlayer now. 

Claire Crick
Assistant Managing Editor at What To Watch

Claire is Assistant Managing Editor at What To Watch and has been a journalist for over 15 years, writing about everything from soaps and TV to beauty, entertainment, and even the Royal Family. After starting her career at a soap magazine, she ended up staying for 13 years, and over that time she’s pulled pints in the Rovers Return, sung karaoke in the Emmerdale village hall, taken a stroll around Albert Square, and visited Summer Bay Surf Club in sunny Australia. 

After learning some tricks of the trade at websites Digital Spy, Entertainment Daily, and Woman & Home, Claire landed a role at What’s On TV and writing about all things TV and film, with a particular love for Aussie soaps, Strictly Come Dancing and Bake Off

She’s interviewed everyone from June Brown — AKA Dot Cotton — to Michelle Keegan, swapped cooking tips with baking legend Mary Berry backstage at the NTAs, and danced the night away with soap stars at countless awards bashes. There’s not a lot she doesn’t know about soaps and TV and can be very handy when a soapy question comes up in a pub quiz! 

As well as all things soap-related, Claire also loves running, spa breaks, days out with her kids, and getting lost in a good book.