He was the son of John Turner of Narrow Street,
Limehouse, a sailmaker and Dorothy Fowler. His sister Harriet married
John Woolmore, the Member of Parliament. He was educated at Merchant Taylors School, London. Turner owned a sailmaking and
canvas firm in Limehouse. He then in 1800 went into a local
cordage business with
Joseph Huddart, in partnership with Woolmore and
Sir Robert Wigram, 1st Baronet. By 1809 he gave up government work for the Naval Board, as inspector of canvas, citing pressure of other business.
William Cotton joined Turner's counting-house at age 15, and in 1807 became a partner in Huddart & Co. His father
Joseph Cotton was a business associate of Turner in the
East India Docks Company, being chairman while Turner was deputy chairman. In 1814 Turner gave evidence to Parliament on the shipping of the
East India Company. He chaired the trust that constructed the
East India Dock Road, as an extension of
Commercial Road,
James Walker in 1820 proposed a trial
steam vessel voyage to Turner, from London to Edinburgh. It took place in June 1821 on the
City of Edinburgh. After
James Watt died in 1819,
James Watt junior turned to friends to preserve his father's memory, among whom Turner was prominent. Turner went on to chair the committee of 1824 which financed
Francis Chantrey's memorial to Watt. During Watt junior's campaign to assert his father's priority claim on the composition of water, Turner in 1839 acted as an intermediary with
Robert Brown, to whom he gave some limited access to relevant correspondence (of
Joseph Banks and
Charles Blagden). Turner was elected a member of the
Geological Society in 1813, of the
Linnean Society in 1819, and of the
Royal Society in 1821. In 1823 he served as
High Sheriff of Surrey. He was also a member of the
Horticultural Society, the
Royal Institution, and the
Athenaeum Club, and a manager of the
London Institution. In 1848 he became an honorary member of the
Society of Civil Engineers. He died at Rook's Nest,
Godstone, Surrey on 17 March 1856 aged 83 and was buried at St Peter's,
Tandridge, Surrey. ==House and garden==