This was one of the exhibits at the Footman James Classic Car Show Manchester at EventCity in September 2017.
It's a 1937 Rolls Royce 25/30, chassis GGR17, with a Thrupp & Maberly body and 4,345cc 6-cylinder in-line engine.
A note in the window had this information about the car and its owners since new:
Custodians from new:
1938-45
G French, Hale, Cheshire
1946-58
Sir Fred Emery JP
Tory MP for Salford West 1935-45
1958-60
L Jackson, Clifton Arms Hotel, Lytham
1960-74
Harold Hobson, Hobsons Garage, Liverpool 5
1974-86
Alexander Stratis Andreadis, London EC3
Son of Athens shipping & banking
magnate; married to Christina Onassis 1975
Daughter of Aristotle Onassis, stepdaughter
of Jacqueline Kennedy Onassis
1986-2012
Autosales of Kirriemuir wedding hire, Angus
Yellow paint added
Major engine rebuild
1994
2012 - Martin Sinclair, Sale, Cheshire
Upgraded engine to
Bentley 4¼ spec, with cross flow cylinder head & twin carbs
Modern Motoring (reversible)
improvements include heating, electronic ignition,
Electric water pumps
& fans