Comedian Luke Kempner had Line of Duty fans in stitches after sharing a brilliant impressions sketch on social media.

Luke shared the video before Sunday’s dramatic episode aired and covered key characters such as Detective Sergeant Steve Arnott, Superintendent Ted Hastings, Detective Inspector Kate Fleming and Detective Chief Inspector Joanne Davidson.

He first appeared dressed as Detective Sergeant Steve Arnott (played by Scots actor Martin Compston) wearing his infamous waistcoat.

Opening the video he said: “Hi my name is DS Steve Arnott, DS stands for… er, not sure there’s so many to remember!

“I’ve got a very important investigation, serious crime is being committed and it’s my…