Speaking to MPs on the Home Affairs Select Committee, Doreen Lawrence said she had no confidence in the police and added it was not right for "police officers to investigate each other".
I have no confidence whatsoever.
Over the years, I was beginning to have a level of trust, we had the investigation and the court case... I was beginning to have some confidence. Now I just don't know what to believe anymore."
You can't have police officers investigating each other. It's proven that's not the right way to do things.
More top news
Ukip party leaders have vowed to overhaul candidate vetting processes after a string of allegations emerged just days before the election.
ITV News is ready to bring you all the results and drama from the most exciting and unpredictable general election night in a generation.
A pizza delivery driver was stabbed during a carjacking - but still managed to deliver his pizzas.