He sat on the Liberal benches in the House of Lords and served as Captain of the Yeomen of the Guard in the Liberal administration of Sir Henry Campbell-Bannerman.
The British Liberal leader at the time, Sir Henry Campbell-Bannerman, denounced what he called the "methods of barbarism".
Lorne House was built in the Scottish Baronial style in 1875 by Henry Campbell.
Henry Colin Campbell (died 1930), executed by the State of New Jersey for the murder of Mildred Mowry
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He was Assistant Private Secretary to the First Lord of the Admiralty Lord Tweedmouth from 1906 to 1907 and served in the Liberal administrations of Sir Henry Campbell-Bannerman and later H. H. Asquith as a Lord-in-Waiting (government whip in the House of Lords) from 1907 to 1910.
The Relugas Compact was the name given to the political plot hatched between H. H. Asquith, Sir Edward Grey and R B Haldane to remove Sir Henry Campbell-Bannerman from the leadership of the Liberal Party in the House of Commons of the United Kingdom in 1905.
In 1839, with Benjamin Latrobe, John Jervis, J Edgar Thomson, Claudius Crozet, Horatio Allen, Henry Campbell, and others he helped organize the American Society of Civil Engineers in Philadelphia; although this organization languished he helped form a new AS of CE in New York in 1852.