Tributes have been paid to Helen who has died after the crash (Picture: Family handout)

Tributes have been paid to a great-grandmother who died after she was hit by a Met Police motorcycle escorting the Duchess of Edinburgh.

Helen Holland, 81, from Birchanger in Essex, was struck at a junction in Earl’s Court, West London, on May 10.

Mrs Holland was left in a coma and a critical condition following the accident but has now died two weeks later.

Her family told the BBC she fought ‘for her life… but irreversible damage to her brain finally ended the battle today’.

Her son, Martin Holland, said his mum had died after ‘suffering multiple broken bones and massive internal injuries’ while using the ‘safe route of (a) pedestrian crossing’.

Helen had been in London visiting her older sister at the time of the smash.

The police watchdog, The Independent Office for Police Conduct, had previously launched an investigation into the crash.

The crash happened on the corner of Cromwell Road and Warwick Road at around 3.30pm on Wednesday, May 10 (Picture: Jamie Lorriman)

It said at the time, as part of its investigation CCTV from nearby properties and police body camera footage would be examined.

It added that cops who were on the scene would be interviewed.

Police have also appealed for witnesses to come forward.

Buckingham Palace previously said Sophie the Duchess of Edinburgh’s ‘heartfelt thoughts’ are with Helen.

Sophie, the Duchess of Edinburgh, attended the King and Queen’s coronation just a few days before the crash (Picture: PA)

The police watchdog confirmed it is investigating the circumstances of what happened (Picture: Jamie Lorriman)

A palace spokesperson said: ‘The duchess’s heartfelt thoughts and prayers are with the injured lady and her family.

‘She is grateful for the swift response by the emergency services and will keep abreast of developments.’

Her son and daughter-in-law Martin and Lisa-Marie Holland previously told the BBC following the accident they were ‘shocked and sickened at her extensive injuries’.

The Met Police’s Special Escort Group provide armed escorts for Royal Family members, VIPs, protected members of the Government, visiting royals, heads of state and other visiting dignitaries.

It also provides armed vehicle escorts for valuable, hazardous and protected loads – and can include high-risk prisoners.

Her family have paid tribute.