It's almost impossible to tell a Mk.I from a Mk.II at this distance, but what I think we're looking at here is a 1989-'93 Rolls-Royce Silver Spur Mk.II, the longer variant of the Silver Spirit.
Photographed with a Sony a77 and a Sony 16-80mm f/3.5-4.5 Carl Zeiss Vario-Sonnar T* zoom lens.