No, DI Kate Fleming isn’t heading undercover as a supermarket shopper.
This is Vicky McClure, the actress who plays Kate, going about her regular life.
Vicky, 35, may star in one of the top-rated shows on television but even famous folk need to do their weekly shop.
She was seen packing her groceries away, wearing a white over-sized T-shirt.
This week it emerged the BBC show, which attracts eight million viewers, will conclude its fifth series with a 90-minute episode on May 5.
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The latest episode of Jed Mercurio's crime thriller series had viewers on their edge of their seats.
And at one moment, f ans were convinced that an apparent production mistake was actually a secret clue to the identity of the series' hidden villain .
Undercover copper John Corbett, who is posing as a gang leader, was getting orders from the mysterious boss of the criminal organisation.
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The big baddie was worried about John's plan to target Eastfield Depot, which is used by the police to store confiscated drugs and weapons.
On the laptop they use to communicate with the higher levels of the OCG, a message read: "Eastfield depot is definately high risk."
The corrupt cop at the top of the chain asked John is they payout was high enough, but had made a bit of an embarrassing spelling error by spelling "definitely" incorrectly.
This immediately triggered various theories from fans, who suspected the spelling error pointed to the real identity of the OCG boss.
- Line Of Duty continues Sunday night at 9pm on BBC1
