Bigmouthmedia will be tasked with boosting visitor numbers to the company's .
Scott Boocock, sales director of Bigmouthmedia UK, said: "[British Car Registrations] has become accustomed to setting the pace in an extremely competitive market and we look forward to playing our part in ensuring that industry-leading status is continued online".
British Car Registrations offers a range of services, including unique and personalised vehicle registrations.
A British Car Registrations spokesperson, said: "If you're going to let someone get under the bonnet of your website and tinker around, you need to know that you're in safe hands. Bigmouthmedia's reputation and expertise made them the obvious choice."