Colin Firth say it was ''a dream come true'' to work with Elton on Kingsman: The Golden Circle.
The actor reprises his role as 'Harry Hart' in the sequel to the 2015 film Kingsman: The Secret Service and got to appear on screen with the rocker who plays a fictionalised version of himself.
Firth has been a life-long fan of Elton, and has revealed that he begged him to appear in the first movie, so was delighted when the musician accepted a part in the second installment.
Speaking at the premiere of the film in London's Leicester Square on Monday night, the 57-year-old said: "It was a dream come true. It's all I've wanted to do since I was about 10, I think. I think I wrote to Elton to beg him to be in the first one. But now I'm hearing all the reactions to Elton and I'm worried I think he may have stolen my thunder."
Elton also attended the premiere and admitted he "jumped at the chance" to star in Matthew Vaughn's second spy romp because he regretted turning down the opportunity to be in the first one.
He explained: "I was supposed to be in the last one and I turned it down. Then I saw it and I said I wish I'd been in it. So when Matthew asked, I jumped at the chance. I was very nervous, but Colin and Julianne made me feel at home. It felt like a family."
Incidentally, Matthew appeared on Elton's latest Rocket Hour radio show where he revealed the importance of music in his life, and talked about selecting Saturday Night's Alright (For Fighting) for part of the Kingsman: The Golden Circle soundtrack.