Begbie's back! Robert Carlyle causes a fan frenzy as filming continues for Trainspotting 2 in Scotland

He's been busy filming for one of the most hotly anticipated movies in years.

And Robert Carlyle certainly looked menacing as he reprised his role as Francis Begbie on the set of Trainspotting 2 in Blackburn, West Lothian, on Saturday.

The 55-year-old actor was spotted alone during an evening filming session and was mobbed by fans eager to get a selfie with the star before he headed home for the night.

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He's back! Robert Carlyle looked menacing as he reprised his role as Francis Begbie on the set of Trainspotting 2 in Blackburn, West Lothian, on Saturday

It may be 20 years since the original film - released in 1996 - brought Carlyle fame and fortune, but he was still recognisable as the iconic Begbie of old.

The actor sported his character's trademark moustache and rocked a mod look comprising a Fred Perry bomber, dark purple slacks and a pair of penny loafers.

Once filming was wrapped up, Carlyle was happy to pose for pictures with eager fans who had gathered around the set to glimpse a sneak peek at the movie.

Earlier this month fellow Trainspotting stars Jonny Lee Miller, 43, and Ewan Bremner, 44, began shooting scenes as their former characters Simon 'Sick Boy' Williamson and Daniel 'Spud' Murphy in Edinburgh.

Then and now: The 55-year-old actor was spotted alone during a evening filming session and was mobbed by fans eager to get a selfie with the star before he left for the night

Happy: Once filming was wrapped up Carlyle was happy to pose for pictures with eager fans who had gathered around the set to glimpse a sneak peek at the movie

Academy-Award winning director Danny Boyle, 59, was spotted giving instructions to members of the cast and crew.

Carlyle recently joined Trainspotting's author Irvine Welsh at The Usher Hall in Edinburgh to mark the film's 20th anniversary. 

'What I will say is that all the characters are exactly where you would want them to be,' he said. 

'The strength of this new script is the fact that the narrative is a bit stronger than it was in the original.

'In the first one, when you think about it, it's hard to remember what they did other than get together, the drug deal at the end, and then it's over.

He's still got it: It may be 20 years since the original film - released in 1996 - brought Carlyle fame and fortune, but he was still recognisable as the iconic Begbie of old

'This has maybe got a wee bit more to it in terms of what they've been up to through these years.

'You learn a lot about Renton, Sick Boy and indeed Begbie and where their heads are. I think it's an absolutely fantastic script. John Hodge has done a wonderful job, as he did with the original.'

And, despite previously admitting to having reservations about the cast reuniting for another film, he added: 'Fingers crossed people will take it on board and they will enjoy it.' 

The new film is based based on novelist Welsh's follow-up book, Porno, which is being adapted by screenwriter John Hodge for the big screen.

Star struck: Fans looked ecstatic as they captured a snap with the famous actor

The sequel is set ten years after Trainspotting and sees the characters cross paths again, but with an alternative gritty backdrop of the pornography business, rather than heroin use.

In Porno, Renton owns a nightclub in Amsterdam, Begbie is being released from prison, and Spud is actually trying to kick his drug habit. 

Spud also has love woes as his relationship with his partner Alison is strained and he feels like he has become a burden on her.

Creator Welsh is set to appear in the role of Mikey Forrester in the follow-up. 

All smiles: Carlyle was clearly popular with locals who lived close to the film set

Gritty: The filming was conducted under the cover of darkness at a council estate in Scotland