A man in his fifties from Aylesbury lost his life in a crash on the A34 near Chieveley on Sunday evening (13/6).
The man’s next of kin have been informed.
Police are appealing for any witnesses or anyone with dash cam footage of the collision.
It happened around 6.55pm on Sunday, when a motorcyclist lost control on the A34 northbound, where is crosses under the M4.
The bike was a black Suzuki and the rider was wearing a black jacket, blue trousers, and a white helmet.
Anyone with information should call 101 quoting reference 43210259006 or you can report using their website.