Watson's character Eilidh harbours dreams of being an artist, but is frustrated that life is not going to plan. Her flatmate Cameron is meticulous and career driven, but everything changes for both of them when they drunkenly sleep together.

"This whole film is about two people being chucked out of any sense of control they thought they had," said James Rottger, who plays the leading man.

"Particularly for Cameron, that's the point of the film – I leaned into the bit of me that's a control freak and likes to do things a certain way, and then brought that out in the character."

Like his co-star, he was delighted to see so much of Glasgow on screen, and being presented in a bright light.

"It's brilliant big productions are coming here and using Glasgow as a double, but it's important we see Scotland on the big screen as itself," he said.

"The film Kevin has written shows Glasgow in a warm light, literally and figuratively. The red sandstone flats, Kelvingrove, the pubs – it's all there."

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