The Silver Cloud was introduced in 1954 to replace the Silver Wraith, and ran in three series until 1967 when it was replaced by the Silver Shadow.  The lines can be seen as a mirror of the Phantom Limousine, but these cars were smaller, a saloon car if you will, and could only accomodate three passengers in the back.

The particular car was a 1963 long wheelbase version complete with division for complete privacy of the passengers in the back.