National Vehicle Contract is one of the UK's leading providers of car leasing and van leasing.Nationwide Vehicle Contracts is one of the UK's leading providers of car leasing and van leasing. Here at National Vehicle Contract, we constantly research the marketplace to bring you the best cars and vans at incredibly low prices. View an unrivalled choice of cars and vans on our website with competitive leasing quotations available at the touch of a button and take advantage of exclusive lease deals with some of the UK's largest finance partners.