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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

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Cite

Boys, J. (2026, October 9). 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. Daily Mail. https://www.dailymail.com/news/article-16196915/Speeding-Audi-driver-inhaled-laughing-gas-killed-music-student-bike-hit-run-jailed-10-years.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Dated when The Aporia collected the article, usually within hours of publication. Check the original for its exact date and byline.

Daily Mail · collected 2026-10-09 · by Jamie Boys

Quick Summary

Tiffany Treanor-Johnson, 27, has been sentenced to over ten years in prison and banned from driving for ten years after speeding at 53mph in a 20mph zone while inhaling laughing gas and hitting cyclist Harry Webb in Hackney, east London. Webb, a 27-year-old music student at the London College of Contemporary Music, died days later due to severe brain trauma. The court heard that Treanor-Johnson fled the scene after crashing into another car and leaving Webb seriously injured on the side of the road.
Written by AI on 2026-10-09, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

Tiffany Treanor-Johnson, 27, was sentenced to more than ten years in prison by Judge Rosa Dean at Snaresbrook Crown Court after she admitted causing the death of Harry Webb, a 27-year-old music student from London College of Contemporary Music (LCCM). The fatal accident occurred on September 18, 2023, in Hackney, east London, when Treanor-Johnson was driving her Audi at over 50mph in a 20mph zone while inhaling nitrous oxide. Webb suffered major brain trauma and died several days later. Treanor-Johnson fled the scene but was caught after another driver took her car keys to prevent her escape. The court also disqualified Treanor-Johnson from driving for ten years. A memorial "ghost bike" has been installed at the accident site in honor of Webb, who posthumously received his master's degree.

Written for “Audi Driver Jailed For Laughing Gas H…” on 2026-11-01, grounded in this article and the 1 other(s) covering the same event.

Story

📰 Audi Driver Jailed For Laughing Gas H…
Crime & Law · 2 article(s) covering the same event. See how they differ ↓

Compared with similar articles

This article reads unscored and hedges 4% of its claims. Each row says how that neighbour differs.
Evening Standard
Hedges 1 of 38 claims Outlet record 65/100
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
48
sentences that state something as happening or true
Uncertain
4%
2 of 48 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
68/100
Daily Mail's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
2
Crime & Law
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-10-09 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

Daily Mail · 8674 article(s) · 21 correction(s) detected
Running correction rate · 21 correction(s)

Who wrote this

Jamie Boys
66 article(s) here · 1 carrying a prediction
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Also by Jamie Boys
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 66 articles by Jamie Boys →

Topics

Audi Hackney LCCM London the London College of Contemporary Music

Subjects

Webb PERSON · 12× Treanor-Johnson PERSON · 6× Harry Webb PERSON · 4× Hackney GPE · 3× Harry PERSON · 3× LCCM ORG · 3× London GPE · 3× Tiffany Treanor-Johnson PERSON · 3× Mike PERSON · 2× the London College of Contemporary Music ORG · 2×

Narrative

Mike and Pat Webb, the parents of Harry Webb, stand outside Snaresbrook Crown Court, London A so-called ghost bike, which is a painted bicycle placed as a memorial near a site where a cyclist has died, was installed at the junction where Mr Webb was hit, together with a picture of him Police found fragments of balloons used to inhale laughing gas in the defendant's car.
framing: assertive · carried by 1 article(s) · first seen 2026-10-09
🔮 He said: 'The sound of the emergency sirens rushing to the scene will always haunt me.

Claims (48 extracted, 2 hedged)

An Audi driver who was driving more than double the speed limit while inhaling laughing gas before hitting and killing a music student has been jailed for more than ten years. asserted
who → drive → years
Tiffany Treanor-Johnson, 27, was speeding at 53mph in a 20mph zone when she hit cyclist Harry Webb, mounted the pavement and crashed into another car in Hackney, east London in September 2023. asserted
she → speed → September
Treanor-Johnson drove off after the crash and left Mr Webb, a passionate drummer and musician, seriously injured on the side of the road, Snaresbrook Crown Court heard. asserted
Court → drive → road
Mr Webb, a 27-year-old student at the London College of Contemporary Music (LCCM), died days later in hospital after suffering major brain trauma. asserted
Webb → die → trauma
He has since been awarded his masters degree posthumously. asserted
He → award → degree
The court was told Treanor-Johnson, of Bramshaw Road, Hackney, had been inhaling class C drug nitrous oxide before the crash on the junction of Kenworthy Road and Hassett Road. asserted
Johnson → tell → Road
On Friday, Judge Rosa Dean sentenced Treanor-Johnson to ten years and nine months in prison, and disqualified her from driving for ten years. asserted
Dean → sentence → years
Treanor-Johnson appeared upset in the dock as the sentence was read out. asserted
sentence → appear → dock
Tiffany Treanor-Johnson, 27, was speeding at 53mph in a 20mph zone when she hit cyclist Harry Webb mounted the pavement and crashed into another car in Hackney, east London in September 2023 Harry Webb a 27-year-old student at the London College of Contemporary Music (LCCM), died days later in hospital after suffering major brain trauma Pictured: asserted
Webb → speed → trauma
Harry Webb with parents Mike and Pat Mr Webb – described as a 'intelligent and wonderfully caring' man – had been speaking to his father on the phone at the time of the crash, which left him with a 'traumatic' head injury, the court heard. asserted
court → describe → injury
Prosecutor Fiona Robertson said Mr Webb had just moved into his new accommodation to start his second year at LCCM earlier that day and called his father 'to thank him for his help'. asserted
Webb → say → help
She told the court: 'The call suddenly went silent as Harry was struck and fatally injured on Kenworthy Road. ' asserted
Harry → tell → Road
A member of the public discovered Mr Webb's mobile phone on the ground after the collision and was able to relay to his father what had happened and told him to make his way back to London.' asserted
what → discover → London
In a victim impact statement, Mr Webb's mother Pat said having him as a son was 'the greatest honour', adding he made 'a positive impression to everyone'. asserted
he → say → everyone
She told the court: 'My life ended on September 10, 2023 after receiving a call from the surgeon. asserted
life → tell → surgeon
We had just moved him into his new accommodation that day.' asserted
We → move → accommodation
She added: 'How can someone smash into him and drive away? ' asserted
someone → add → him
Watching someone you love die is an image you'll never forget. asserted
you → watch → ?
'I cannot bear waking up without him every day. asserted
I → bear → him
We have no future left, each day is painful. asserted
day → have → future
Tiffany Treanor-Johnson was raising money for Cancer Research UK in 2023, the year she went on to crash into Mr Webb, pictured here with her grandmother In a statement read by the prosecutor, Mr Webb's father Mike said he felt 'so helpless' being 'miles away' when the collision happened. asserted
collision → raise → prosecutor
He said: 'The sound of the emergency sirens rushing to the scene will always haunt me. asserted
sound → say → me
'We both miss Harry constantly.' asserted
We → miss → Harry
Mr Webb had a maths and philosophy degree from Bristol University and a master’s in philosophy from the University of Amsterdam. asserted
Webb → have → Amsterdam
Mr Webb's friend George told the court: 'Nothing could have prepared me for suddenly losing Harry. uncertain
Nothing → tell → Harry
'He was the most fun, caring, intelligent and wonderfully caring person you could ever meet. uncertain
you → meet → ?
'I will surely suffer from the loss of him for the rest of my life.' asserted
I → suffer → life
Many friends of Mr Webb, along with family members, attended the hearing on Friday. asserted
friends → attend → Friday
Treanor-Johnson wept in the dock as the statements were read. asserted
statements → weep → dock
Earlier in the hearing, the court was told Treanor-Johnson's Audi subsequently hit a red Citroen. asserted
Audi → tell → Citroen
Brenton Henry, who was driving the Citroen, said he 'made eye contact' with Treanor-Johnson and 'pulled forward to stop her' as she was continuing into Ballance Road, the court was told. asserted
court → drive → Road
Mr Henry then got out of his car, walked to Treanor-Johnson's vehicle and took her car keys to prevent her from leaving. asserted
Henry → get → her
The court heard one of the two girls travelling in the back of Treanor-Johnson's car removed a bag from the vehicle as she got out and left the scene. asserted
she → hear → scene
The police then arrived and found Mr Webb lying on the floor, and arrested Treanor-Johnson. asserted
Webb → arrive → Johnson
Mike and Pat Webb, the parents of Harry Webb, stand outside Snaresbrook Crown Court, London A so-called ghost bike, which is a painted bicycle placed as a memorial near a site where a cyclist has died, was installed at the junction where Mr Webb was hit, together with a picture of him Police found fragments of balloons used to inhale laughing gas in the defendant's car. asserted
Police → stand → car
Mitigating, Stephanie Panchkowry said: 'Ms Treanor-Johnson was clearly in a state of shock at the time of what had happened. ' asserted
what → mitigate → time
She has always put forward that she was not evading, deliberately, what had happened.' asserted
what → put → ?
The judge told Treanor-Johnson: 'You are solely to blame for the collision. ' asserted
You → tell → collision
I am sure that you were probably impaired due to taking balloons. ' asserted
you → take → balloons
We must all hope that you truly are sorry.' asserted
you → hope → ?
…and 8 more, not listed.
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