A criminal investigation has been launched into the death of a woman hit by a Met Police motorcyclist escorting the Duchess of Edinburgh.

Helen Holland, aged 81, sustained serious injuries in the collision in Earl’s Court in London, and died in hospital two weeks later.

The Independent Office for Police Conduct (IOPC) is criminally investigating the actions of a Metropolitan police (MPS) officer who was involved in the collision on 10 May.

The motorcyclist, a police constable, has been told they are under criminal investigation for the offences of causing death by dangerous driving and causing death by careless or inconsiderate driving, the IOPC said.

They are also being investigated for potential gross misconduct – however, that does not mean that charges or disciplinary proceedings will follow.

IOPC director Amanda Rowe said: “Our thoughts remain with Ms Holland’s family, friends and everyone affected by her death.

“This is a tragic incident and it is important that we carry out a thorough, independent investigation to establish the full circumstances, which will include the actions and decision-making of the officer under investigation.

“We have been in regular contact with Ms Holland’s family and we will keep them updated as our investigation progresses.

“At the end of our investigation, we will decide whether to refer the matter to the Crown Prosecution Service for a charging decision and whether the officer should face disciplinary proceedings.”

Investigators attended the scene and police body-worn video footage has been reviewed.

Witness accounts have also been taken after an appeal in the wake of the crash.