A gross misconduct hearing heard that Metropolitan Police officers Jonathan Clapham and Sam Franks lied about smelling cannabis in Dos Santos' car, a breach of professional standards.

Williams, a World Championships bronze medallist for Britain in Budapest this year in the 4x100 metres relay, and her partner Dos Santos believe they were racially profiled.

They were pulled over by officers in London in July 2020 as they returned from a training session.

This was reportedly on suspicion of having drugs and weapons, but nothing was found.

Both athletes were handcuffed while their three-month-old baby was still in their Mercedes.

"This is huge, this is a massive step," Williams told the BBC.

"It shouldn't have taken three years to get to this result.

"This is a huge step in the right direction for people who continue to get stopped by the police and have that same old excuse about smelling of cannabis when nothing's been found."

Williams had made a complaint to the police watchdog.

Officers had alleged that Dos Santos had allegedly been on the wrong side of the road, a claim denied by Williams.

Police also claimed that the Mercedes could be linked to "gang activity".

Allegations against three other officers were not proven, but it was recommended that they undertake a "reflective practice process". 

The panel also found unproven the claim that the race of the athletes had played a role in their treatment, according to The Guardian.