Labour MP Dawn Butler stopped by police in London

Car driven by a friend pulled over by officers who later admitted they made a mistake

• The system needs to change': Dawn Butler on being stopped by police

Dawn Butler, the Labour MP and former shadow equalities minister, has accused the police of being institutionally racist after she was stopped while driving to Sunday lunch with a friend.

Butler, a strong critic of police stop-and-search tactics, said the car was being driven by her male friend, who like Butler is black, when two police cars pulled it over in Hackney, east London. Officers said the vehicle was registered in North Yorkshire.