UK and Dutch Armstrong Siddeleys joined forces to amass 19 cars for a 140-mile run from Sandringham House to Windsor to celebrate the Queen's Diamond Jubilee on 5 June.
Two days before the road-trip, the cars were on display at Holkham Hall (below), the ancestral home of Lord Leicester, a Friend of the Armstrong Siddeley Heritage Trust.
While there the Armstrong Siddeley Owners' Club members saw Lord Leicester's 1909 Wolseley Siddeley.
Bought new by Lord Leicester's grandfather and in use until 1928 before being sold, it ended up derelict and being used as a chicken coop before being discovered and restored.
The next day the cars went on display at Sandringham's visitor centre, in good company given that a 1928 shooting brake that served at Balmoral (above) is displayed in the selection of royal cars at the Norfolk estate.
On Tuesday all the cars successfully completed the run to Windsor where they were joined by 10 more Armstrong Siddeleys including the 1952 18hp Landaulette used by the Governor of Aden and the Mk2 Star Sapphire prototype (below).