A lovestruck romantic has proposed to his girlfriend with a custom-made Scottish Lego video.

Ben Anderson popped the question to Kirsten Dally while screening the video at a cinema - after she thought they were going on a date to watch the new Jason Bourne film.

The video shows Ben, 36, sitting on a park bench - like Forrest Gump - narrating the story of his relationship with Kirsten, 37, including how they met, their first date and some of the fun things the pair have done together.

It was put together by Lego animation genius Morgan Spence, 17, who has previously created viral Lego stop-motion videos showcasing classic movie scenes and moments from history.

He has also made a Lego music video for DJ Paul Oakenfold.

The teen, who has just started his final year of school, was approached by Ben a few months ago with the idea.

Morgan, from Kilbarchan, Renfrewshire, said: "Ben wrote to me after seeing my work online asking about the opportunity to make a film for him.

"He had a big plan to propose to his girlfriend in the Electric Cinema in Birmingham. He wanted me to produce a Lego animation describing how they met in a film style almost like Forrest Gump sitting on a park bench.

"It's unlike anything I had done before. It's a bit cheesy but that just made me like it more."

Ben and Kirsten, who are both from near Worcester, went to Electric Cinema in Birmingham on August 6 to see the Jason Bourne film.

During the trailers Ben's video appeared on screen, before he got down on one knee and popped the question to a gobsmacked Kirsten.

The forestry manager said: "It was bloody nerve-wracking. The cinema told me what the listing was for the adverts so I knew the sequence. I was counting it down and knew mine was next.

"Hearing your own voice was cringey.

"Kirsten just couldn't believe it. At one point she elbowed me in the ribs and asked me what the hell I had done. She was quite overwhelmed."

The cinema was around two thirds full, but as soon as Kirsten said yes, Ben said there was a huge round of applause which spread from their seats to the front, which he added was a "lovely response".

Ben got the idea for the video after trying to come up with a unique way to propose.

He said: "I Googled Morgan and thought his work was brilliant. I loved Lego growing up and I wanted something different."

And Morgan was happy to help, as he thought it was a "really nice story".

It took him two months to put the animation together, and also involved getting custom-made Lego characters for Ben and Kirsten.

Morgan said: "The t-shirt the Ben figure is wearing he actually owns. The music and locations in it are very personal to them. I really enjoyed doing it.

"Ben emailed me just after the proposal to say it had all gone well. Kirsten was over the moon and they were both delighted. It's a very happy ending."

In the two-and-a-half-minute long video, Ben's Lego character speaks directly to Kirsten, who works in marketing, saying he wants to tell her "how happy you make me".

He then narrates the story of how he and his fiancee met online before going on their first date, which featured a "terrible icebreaker".

The Lego couple are then shown sharing their first kiss in the rain, visiting Dismaland, going to a James Bond premiere and going on holiday to places such as Thailand and Poland.

It then cuts back to Lego Ben, where he asks the real-life Kirsten to stand up and says to her: "I realise I'm so, so lucky and I was wondering, will you marry me?"

Some footage from inside the cinema, taken by staff, has been added to the end of the clip, showing Kirsten accepting the proposal and the happy couple taking a seat as the auditorium erupts in applause.

And while the couple have yet to plan their big day, they are considering incorporating Lego into the nuptials.

Ben said: "We could use Lego - Morgan's idea was to use the characters as cake toppers.

"We're going to have to watch the film again because we couldn't take it in. I'm really happy and really relieved."