Samuel Williams is something of a ringer for Sheeran, with a similar smile, hair and build.
So when fans spotted him at one of Sheeran's concerts they made a beeline for him, reported The Sun.
The 24-year-old insisted that he wasn't the star but soon found himself surrounded by eager fans who wanted selfies.
Luckily, Shape Of You singer Sheeran asked a security guard to intervene.
Williams - who is a massive fan of the singer - told the publication: “I was in the crowd at one of his shows and a lot of people wanted their photo with me and it became very tight. People were jumping around and jumping over to get a photo.
“I was like, ‘I am not Ed Sheeran guys. Will you stop?’ And he sent out his security guard to make sure to come out and see I was all right."
When he met Sheeran, the star told him: "Oh yeah I sent him out. You needed the help."
Williams is the son of Finty Williams, Dame Judi’s daughter.
The Oscar-winning actor has previously been quoted as saying that her grandson gets “mobbed” because he resembles the chart-topper so much.
And it has also been reported that the pop star was so wowed by his lookalike when they first met that he thought Williams might make a good body double for him.
Watch: Ed Sheeran, Elton John and Courteney Cox serenade Lisa Kudrow