If another driver causes their vehicle to collide with the rear
of yours, there is fault on their part.
Rule 126 of the Highway Code states:
"Leave enough space between you and the vehicle in
front so that you can pull up safely if it suddenly stops. The safe
rule is never to get closer than the overall stopping
distance."
In a case involving a rear end shunt, there is a presumption of
fault on the part of the driver of the vehicle at the rear.
It would be easy to assume if your vehicle is shunted from the
rear by another vehicle that you will automatically win your
personal injury case and receive compensation for your injuries and
other losses.
However, as with all personal injury cases, the burden of
proving fault lies with the individual pursuing the claim who must
prove how the accident occurred and how the other driver is at
fault.