Riseholme (fictional village) Poppy, Duchess of Sheffield, at nearby Sheffield Castle (which Benson located at "Sheffield Bottom"—unconnected to the Yorkshire Sheffield). It was revealed in "Mapp and Lucia" that Lucia's great rival in Tilling, Elizabeth Mapp ("Miss Mapp", 1922) had once visited Riseholme and stayed at the Ambermere Arms. She also hijacked Lucia's "au reservoir" (for "au revoir") and presented it to Tilling society as her own. Cynthia and Tony Revell (1984) "Mr Benson remembered in Rye, and the world of Tilling" cited Sir Steven Runciman (1903–2000), a Cambridge historian who knew Benson well, and Benson's manservant Charlie Tomalin (d.1981) for the assertion
Thomas Tilling a BTC subsidiary to run Tilling's London private hire business, which continued under nationalisation. BET retained its independence but the BTC ultimately gained up to a 50% holding in 17 of its companies so, from 1949, there were still two major bus groups, the nationalised BTC (formerly Tilling) and BET (partly owned by the BTC). By 1955 the BTC and BET companies were often known as the "Associated Companies" since "the actual ownership of the buses [was] to a greater or less extent in the hands of one party". The ex-Tilling companies continued to be commonly referred to as the