Driver jailed for fatal Hackney cyclist collision while inhaling nitrous oxide
Tiffany Treanor-Johnson has been jailed for ten years and nine months after driving at more than twice the speed limit, while inhaling nitrous oxide, and fatally hitting cyclist Harry Webb in east London. She drove away after the September 2023 collision, leaving Webb with severe brain injuries; he died in hospital days later. The case highlights the fatal consequences of dangerous driving and leaving an injured person at the scene.
Treanor-Johnson was travelling at 53mph in a 20mph zone in Hackney when she struck Webb, mounted the pavement and collided with another car. The court heard that Webb, 27, was a music student heading to a swimming pool and had been speaking to his father by phone; he was awarded his master’s degree posthumously. She was also disqualified from driving for ten years.
- Driver jailed for ten years and nine months after fatal collision.
- She was travelling at 53mph in a 20mph zone.
- Harry Webb, 27, died days after being struck while cycling.
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In September 2023, cyclist Harry Webb was struck by a car in Hackney, east London, sustaining severe brain injuries that led to his death in hospital. The 27-year-old music student was on his way to a swimming pool when the collision occurred. The driver did not remain at the scene.
The driver, Tiffany Treanor-Johnson, was travelling at 53mph in a 20mph residential zone at the time of the collision. She was also inhaling nitrous oxide, a drug sometimes used recreationally that affects judgement and motor control. The combination of these factors formed the basis of serious charges against her.
Road safety in urban areas, particularly for cyclists, is an ongoing concern in many communities. Substance-impaired driving, including the use of drugs such as nitrous oxide which affects reaction time and motor control, raises particular risks. This collision resulted from multiple dangerous driving behaviours occurring together: excessive speeding, substance use, and failure to remain at the scene.
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Originally published by Daily Mail as “Speeding Audi driver who inhaled laughing gas before she killed music student on his bike in hit-and-run is jailed for more than 10 years”.