Lord Claud John Hamilton PC (20 February 1843 – 26 January 1925) was a British aristocrat, Member of Parliament (MP), and a noted railway director during the Victorian era.

He was appointed Honorary Colonel of the battalion on 17 January 1891, in succession to his elder brother James Hamilton, 2nd Duke of Abercorn.

[8] In 1865, he became Conservative MP for Londonderry City until 1868 when he was appointed a Lord of the Treasury in Benjamin Disraeli's first ministry.

The GER operated from London's Liverpool Street station to major eastern towns and cities including Cambridge, Norwich, Ipswich, Chelmsford, and Colchester.

"He devoted the main energies of his life to the company, constantly travelling over the system, observing its conduct and operation".