Rolls-Royce Motor Cars has added extra shifts and extended working hours at its manufacturing plant at Goodwood to cope with demand for its three Phantom variants.

Further investment is planned for the coming months in preparation for production next summer of a four-seat Phantom coupé based on the 101EX concept shown to customers last year.

A third model series, smaller than Phantom, will enter production by 2010.

Rolls-Royce Motor Cars’ global sales to the end of September were up 22%, and forward orders extend “well into 2008”, said a spokesman. UK registrations are expected to reach around 100 units by the end of this year – accounting for around 12% of annual production.

The spokesman said the UK is second largest market behind the USA, and has seen steady growth since the 2003 launch of Phantom. Global sales in 2006 reached 805 units.

The carmaker this month announced changes to part of its sales operations.

David Archibald, regional director for UK and South Africa, will add Europe to his responsibilities when Axel Obermueller retires on December 31.