Loch was born on 7 May 1780 at Drylaw, near Edinburgh, and died on 28 June 1855 at his home in Albemarle Street, London. He was the eldest son of George Loch of Drylaw and his wife Mary Adam, from Blair. Loch trained for a career in the law and was admitted as an advocate in Scotland in 1801. He was called to the English bar at Lincoln's Inn on 15 November 1806. Loch lived at Drylaw and in London and practised as a conveyancer for a few years, until he left the law to move into estate management. He worked for many eminent people including the Duke of Sutherland, Lord Francis Egerton, the Earl of Carlisle and Viscount Keith. As an estate commissioner, Loch was responsible for much of policy regarding land management in England and Scotland.
From The Biographical Dictionary of British Economists in Oxford Reference.