His subsequent work in agriculture was mainly in Norfolk, but he also suggested extensive embankments in Lincolnshire, which were successfully carried out.
He was for a short time bailiff of George III's farm in the Windsor Great Park.
Their offspring included: 1) Marianne, baptized at All Saints Fullham on 28 Sept 1769, buried at Buxton, Norfolk, on 21 Mar 1773 2) Sophia, baptized at All Saints Fulham on 10 Oct 1772, married to Charles Adams at St Martin in the Fields, Westminster, on 22 Jan 1803 The widowed Kent married Miss Armine North, granddaughter of Roger North, on 10 April 1783.
Returning to England in 1766, he drew up an account of Flemish husbandry at the request of Sir John Cust, the Speaker of the House of Commons, who persuaded Kent to devote himself to agriculture.
[1] Kent published in 1775 Hints to Gentlemen of Landed Property (3rd edition 1793) with coverage going as far as labourers' cottages.