A woman from Hackney has pleaded guilty to killing a cyclist after inhaling nitrous oxide and driving at 50mph in a 20mph zone. Tiffany Treanor-Johnson, 27, of Bramshaw Road, Homerton, crashed into 27-year-old Harry Webb as he cycled on Kenworthy Road on the evening of September 10, 2023.
Treanor-Johnson initially pleaded not guilty to causing death by dangerous driving, but changed her plea to guilty on April 29, 2026, just before her trial was set to begin. She wept in the dock at Snaresbrook Crown Court as she admitted the charge.
The Crash
On the night of the incident, Treanor-Johnson had inhaled nitrous oxide, which affected her driving. She reached speeds of up to 51mph on the 20mph Kenworthy Road before mounting the pavement and striking Harry Webb, who was on his way to an evening swim. He was on the phone with his parents, using a mounted phone and earphones, after they had helped him move into his new home in Hackney.
Harry Webb was described as a popular Welshman studying at the London College of Contemporary Music. He suffered critical injuries and died at the scene.
Legal Proceedings
Fiona Robertson, prosecuting, told the court that the starting point for Treanor-Johnson's jail sentence should be 12 years, though this will be reduced due to her guilty plea. Judge Rosa Dean ordered Treanor-Johnson to be taken into custody immediately, citing “substantial concerns” she would fail to attend the subsequent sentencing hearing.
Detective Inspector Mark Braithwaite, of the Met’s Serious Collision Investigation Unit, said: “Harry’s life was cruelly stolen from him by Tiffany Treanor-Johnson. Her decision to initially contest the case put his family and loved ones through months of unnecessary pain as they prepared for the trial.”
