Demand declined 3.0 percent on the year in November alone, the Society of Motor Manufacturers and Traders (SMMT) said on Wednesday, and warned about the consequences of Britain crashing out of the European Union without a deal.

"It's now critical that a Brexit deal is secured to boost consumer confidence and provide a stimulus to the new car market as we enter the New Year," said SMMT Chief Executive Mike Hawes.

(Reporting by Costas Pitas, editing by David Milliken)