His dual role encompasses both the commercial performance of the SsangYong franchise, dealer development, vehicle sales and financial services.
Nicholson will report to the newly-appointed SsangYong managing director Paul Williams.
Joining Koelliker UK and SsangYong now is a great opportunity to bring all my experience to bear on what is a new company and a new start for the brand, said Nicholson.
I'm excited by being able to implement change and shape the future of this franchise.
Previously Nicholson was with Ferrari GB for over three years as finance director and then operations director
He has also held senior management positions with Lexus, Toyota and McCarthy Motor Holdings.