Published Sunday, 03 June 2012
The music extravaganza at Buckingham Palace features a star studded line-up, including Sir Paul McCartney, Stevie Wonder and Sir Elton John - and is being held to celebrate Queen Elizabeth II's 60th year on the throne.
Barlow is organising the mammoth music spectacular, and admits he is suffering from nerves after calling the concert the "biggest thing I will ever do".
He tells The People: "It's the biggest achievement for me, ever. The concert is the biggest thing I will ever do. It's b**ody scary. The stage is enormous.
"I was in a cab near the Palace the other week and I asked if there was any way around the traffic. The driver said, "Nah, some t**t decided to build a stage here'. I said, 'Yeah, I can't believe it', and kept my head down."
But Barlow can't wait to see the gig unfold.
He adds: "We've never had the Palace as a concert backdrop before... The show is going to be incredible. I will be more nervous than about anything else in my career."