The awards, now in their sixth year, recognise the contributions that suppliers made in the last year.
Speaking at the awards ceremony, LeasePlan UK managing director Kevin McNally said: 'It has been a very successful year for LeasePlan, but this would not have been possible without the dedication and excellent level of service from our suppliers and we thank them for that.
'LeasePlan recognises the importance that the partnership between ourselves and our suppliers plays in delivering the highest level of service possible to our customers.
'The Supplier Awards gives us the opportunity to reward some of them for the continued support they have given us throughout the past year.'
Other winners included Manheim Coventry for best auction centre and BCA for best remarketing partner.