Cyclist sadly dies 12 days after Hemel Hempstead collision as police launch new appeal for witnesses
A man has sadly died 12 days after the bike he was riding was involved in a collision with a car in Hemel Hempstead, police have announced.
Hertfordshire Police are refreshing an appeal for witnesses, information and dash cam footage after the man passed away following a serious road traffic collision near Hemel Hempstead on Friday 5 December.


The incident occurred in Gaddesden Row, Great Gaddesden, at around 9.30am on December 5th.
A cyclist was travelling from Jockey End towards Hemel Hempstead when, for reasons unknown at this time, they were involved in a collision with a white Kia Sorento.
The cyclist, who sustained serious injuries and was taken to hospital, has now sadly died, police have confirmed.
A man was arrested at the scene and has been released on bail while enquiries continue.
Detective Sergeant Ben Heath, from the Bedfordshire, Cambridgeshire and Hertfordshire Serious Collision Investigation Unit, said: “Our thoughts are with the man’s loved ones at this difficult time, and investigations are continuing to establish the circumstances around the collision.
“As part of our enquiries, we are appealing for anyone with information to please come forward. Did you witness the collision or see the pedal cycle or the vehicle in the area around the time?
“We’re particularly keen to hear from anyone who may have captured dash cam footage. If you have something of note, this can be uploaded directly online.
You can also report information online at herts.police.uk/report, speak to an operator in our Force Communications Room via the online web chat or call the non-emergency number 101, quoting Op Marble.