If you use a van on public roads, it must usually be insured at least for third-party liability, even if you are looking for the cheapest policy. A van kept off the road may be uninsured only if it is declared SORN and not used or parked on public roads. Check that the policy covers how you use the van, such as commuting, business trips or carrying goods, as a low price may reflect limited cover or exclusions. Compare FCA-authorised providers and check the policy wording before buying.