Singer Madonna has been accused of using a fake police car to queue-jump through traffic here.

The 57-year-old singer allegedly hopped in a black Jaguar after her two gigs on Tuesday and Wednesday this week at the O2 Arena here. When the vehicle sped off with blue and red lights flashing from its dashboard and queue jumped through traffic, reports femalefirst.co.uk.

"I was waiting outside the O2 and all the roads were blocked. Nobody was moving, then all of a sudden there's this huge commotion and I saw flashing lights. Then I saw a car and we figured it was an undercover cop. It was beeping so all the traffic let it through. Some drivers were really annoyed," The Sun newspaper quoted an eye witness as saying.

"Then I looked into the car and saw Madonna. She's being driven out with a flashing light sat on the dashboard," the witness added.