Robert Carlyle kept away from his family in Glasgow while filming T2 Trainspotting because he was bringing his psycho character Begbie home with him.

Carlyle, originally from Maryhill, told Time Out London that he stayed in Edinburgh while he reunited himself with the iconic Scottish character in the long-awaited sequel.

He said: "There’s a level of anger that you need to hold on to, so you don’t have to find it every day. It does take its toll on your private life.

"You find yourself being short with people. You get a wee bit louder and a wee bit more snappy. You think: Where the f**k’s this coming from? Then it hits you: of course – Begbie’s sitting there in the back of your head.

"My family were in Glasgow, but I stayed in Edinburgh, because he’s not the kind of character you want to take home with you every night."

T2 comes 21 years after the original film, which followed a group of heroin addicts and explored urban poverty in Edinburgh, based on the novel of the same name by Irvine Welsh. The sequel is based on his book Porno.

The trailer for the sequel was released in November and opened with McGregor's Mark Renton returning to Edinburgh to see his friends again.

Over the strains of Underworld's hit Born Slippy, which featured prominently in the 1996 film, Renton revives his bitter "choose life" motto but with modern references - "Choose Facebook, choose Twitter, choose Instagram and hope that someone, somewhere, cares".

He also refers to choosing reality TV, slut-shaming, revenge porn and zero-hour contracts before saying: "Choose to smother the pain with an unknown dose of an unknown drug."

Renton's narration ends with: "You're an addict, so be addicted, just be addicted to something else. Choose the ones you love, choose your future, choose life."

The cast and crew from the new film were seen filming at various locations across Edinburgh and elsewhere in Scotland in 2016.

In July, McGregor and Bremner were seen sprinting out of a shop on Princes Street, with Oscar-winner Boyle directing the pair as they recreated the famous opening sequence from the first movie.

T2 Trainspotting will be released in UK cinemas on January 27