Various factors will slow growth of Ford’s British nameplates in the US this year, though sales of Jaguar, Land Rover and Aston Martin cars have more than doubled in the last two years, Reuters said, citing a senior company official. "What I see this year is very modest growth overall," Mike O'Driscoll, North American president of Jaguar, Land Rover and Aston Martin, told Reuters at the Detroit motor show. He said a more competitive US vehicle industry was one thing likely to slow the UK marques’ sales.