A teenage moped rider's death while being pursued by a Met Police officer showed the force had failed to train its staff "effectively", a coroner has warned.
Lewis Johnson, 18, died after hitting a traffic light pole while carrying a pillion passenger in Clapton Common, east London, in February 2016 as the pair tried to evade arrest for suspected phone thefts.
An officer chased the moped for more than three minutes before the crash and followed him "too closely at times", which put him under extra pressure and affected his decision making, an inquest jury found.
Senior coroner Mary Hassell said it showed the Met had failed "to implement, disseminate and train relevant staff… effectively".
The inquest heard the driver of the police vehicle did not have the qualification required under the force's rules at the time to pursue motorbikes.
However, the chase still took place because of "a lack of knowledge" among the driver, vehicle operator and Met control room staff, and "a lack of adequate communication" of the policies.
The jury also found that opportunities to reduce the risk to Mr Johnson and the public by the driver in the pursuit were missed.