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Bianca Williams won European and Commonwealth gold in the 4x100m relay in 2018
The Met has referred itself to the policing watchdog over the controversial stop-and-search of a Team GB sprinter in west London.
Bianca Williams and Ricardo dos Santos, a Portuguese 400m runner, were stopped in Maida Vale on Saturday.
Williams, 26, accused the Met of racially profiling her partner for driving a black Mercedes.
The Independent Office for Policing Conduct (IOPC) will investigate any potential wrongdoing.