A teenager rushed to the aid of a cyclist who was involved in a collision with a lorry on Chelsea Bridge before passing away in hospital hours later.
The proud mum to the 15-year-old praised his efforts to save the 36-year-old woman before sh died from her injuries in hospital.
The female cyclist was killed following the incident on Wednesday (September 27) becoming the seventh person to die on a bike in the capital this year.
The driver of the lorry stopped at the scene on Chelsea bridge during morning rush hour, and was later arrested on suspicion of causing serious injury by dangerous driving.
The 36-year-old woman was taken to a west London hospital but despite efforts to save her she died.
"Claire M" posted on social media: "Proud of my 15 y/o son who did cpr at Chelsea Bridge to a female cyclist thanks to St George Primary who taught him. Sadly she passed away."
A Metropolitan Police spokesman said officers were called to the bridge at 7.50am and London Ambulance Service and London's Air Ambulance also attended.
Officers from the force's serious collision investigation unit are investigating the collision.
A spokesman for Transport for London (TfL) said seven cyclists have been killed in road collisions since January 1.
Leon Daniels, managing director of surface transport at TfL, said: "Our thoughts are with the friends and family of the woman who sadly died after a collision this morning while cycling along Chelsea Embankment.
"We will assist the police as they investigate the circumstances."
Paramedics were praised by witnesses, and DHL lorry driver Steve Marshall tweeted that he helped police by parking his vehicle near the scene to shield cyclists.
Any witnesses or anyone with any information is asked to call police on 020 8543 5157 or Crimestoppers on 0800 555 111.
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