[4] B-types carried 16 passengers inside and had seats for 18 on the uncovered top deck.

[2] It was soon found that the glass windows on the lower deck were prone to breakage, mostly from contact with the men's rifles and packs.

On 14 February 1920 B43 was inspected by King George V at Buckingham Palace, becoming the first bus any British monarch had ever boarded.

[7][6][nb 1] During the early 1920s the bus was retired from service and preserved by the Auxiliary Omnibus Companies Association, who renamed it Ole Bill after Bruce Bairnsfather's celebrated caricature of a British soldier.

[7] Ole Bill continued to appear in commemorative parades,[nb 2] before being presented to the Imperial War Museum in April 1970.

[12] The last double decker was withdrawn from regular service on 12 October 1926, though a few were held in reserve until 9 August 1927.