YouTuber Emily Hartridge was killed age 35 in an e-scooter crash because her tyre was flat, a coroner said.
She became a star in her own right with 354,000 YouTube subscribers for her 10 Reasons Why videos on sex to mental health.
Her boyfriend Jake Hazell had bought her the scooter as a birthday presents in the weeks before her death.
The TV presenter was the first person in the UK killed in a e-scooter crash.
Her death was ruled as an accident after she collided with a lorry near Queenstown Road roundabout, in Battersea July 12 last year.
Dr Fiona Wilcox said the lack of air in the tyre caused the crash on the scooter which had been driven “too fast”.
Emily was on her way to a fertility clinic as she and her boyfriend had begun making plans to start a family together.
Jake previously shared his regrets over buying her the present and didn’t blame anyone for his girlfriend’s death.
Westminster Coroner’s Court held the inquest into Emily’s death remotely.
Dr Wilcox wrote: “Ms Hartridge was riding an electric scooter on Queenstown Road when she lost control after passing over an inspector hatch in the cycle lane and was thrown under the path of an HGV.
“She died instantly of injuries sustained by the HGV driving over her.
“The scooter was being unsuitably driven, too fast and with an underinflated tyre and this caused the loss of control and her death.”
At the time of Emily’s death, e-scooters were illegal to use in the UK unless it was on private land with consent from the owner.
It now is legal to ride e-scooters on the roads across Great Britain from August 1.
This move was made to decreases numbers on public transport by helping people get about amid the coronavirus pandemic.
E-scooters still cannot be used on pavements in guidelines published by Department for Transport.
Their speed has been capped to 15.5mph.
It has been recommended people wear helmets while using e-scooters to get about.
Just four months after Emily’s death, her grieving boyfriend Jake sat down for an exclusive interview with Mirror Online.
The personal trainer disclosed to The Mirror exclusively about how the harrowing aftermath of her death left him vulnerable to the vices of drink and drugs.
He told us: “My mum and dad moved to London when she passed away. None of us had ever been through anything like this.
“Obviously being in recovery, it was a very testing time.”