Sir Rupert De la Bère, 1st Baronet, KCVO, R.af.D (16 June 1893 – 25 February 1978) was a British businessman, soldier, and Conservative Party politician.
Sheriff of London 1941 and Lord Mayor of London 1952.
Article in Wikipedia [1]. File at The National Archives listed here and some information here. The Peerage website page [2]. There are also various filmclips.