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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Health union workers were due to walk out on Thursday in a dispute over pay.
Rail services through Farringdon are being delayed again tonight as engineers carrying out safety checks.