Car and Van insurance can be a significant expense for employers as insurance rates tend to be twice what you would pay for a domestic policy.
This is because claims records are higher for company vehicles than personal vehicles for two reasons.
You tend to take less care when driving a company car than your personal one (go on admit it!)
Cars are used for business so tend to do a higher mileage and on more congested roads.
It is a necessary evil however and you should always review your policy when it is due for renewal as significant savings can often be made.