Driving Other Cars
Most policies cover the policyholder in person while
driving a car which belongs to someone else. However, cover will
be limited to third party only, even if you have a comprehensive
policy. Accidental damage to the borrowed car will not be covered
by your insurance.
Make sure you have the car owner's permission to drive it and
that they have arranged comprehensive insurance to cover you as
a driver under their policy. If they have done this, then accidental
damage claims to their car, while you are driving, will be met
by their policy. Similarly, before letting someone else drive
your car make sure your policy does not have a restriction on
who may drive it.