McFly performed a free concert to Christmas shoppers in Oxford Street today, which is closed to traffic for the day.
But they weren't the only celebrities wandering around.
TOWIE'S James 'Arg' Argent and Duncan Bannatyne from Dragon's Den are among the stars serving customers from behind the counter on behalf of the Make A Wish foundation charity.
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The rogue green-fingered fanatic has been secretly hacking shrubs at parks and doing a "proper" job.
Labour MP Kate Hoey is asking the National Audit Office and the Commons' Public Accounts committee to examine the £175m project.
The group, which also includes Shepperton Studios, has made more than 2,000 films and 800 TV shows over the last 80 years.