Sir Henry Cosmo Orme Bonsor, 1st Baronet, DL (2 September 1848 – 4 December 1929) was an English brewer and businessman and a Conservative politician who sat in the House of Commons from 1885 to 1900.

[6] Also in 1885, Bonsor purchased the estate of Kingswood Warren, Surrey from Sir John Cradock Hartopp and lived there until 1906 when he put it on the market because of the rising cost of maintenance.

[7] In 1898 Bonsor organised the brewery amalgamation to form Watney Combe & Reid, of which he remained chairman until 1928.

At the start of 1899 the SER entered into a working union with its neighbour and hitherto competitor, the London, Chatham and Dover Railway (LCDR).

[citation needed] A train named in his honour formerly ran as part of the Southern services to London Bridge.