 In 1537 Morris was again at Carlisle inspecting the fortifications, which had been declared unsound ; was granted license to be "overseer of the science of artillery;" appointed master gunner of England, and on 31 July landed at Calais, where in 1539 he was one of the commissioners appointed to receive Anne of Cleves; on 18 October he was knighted at the creation of the Earl of Hertford and Southampton.In 1542 Morris was in England superintending the artillery, not always with success, for of the pieces despatched for the war in Scotland in October 1542 all but one burst.In March 1543–4 he joined Edward Seymour, Earl of Hertford's expedition to Scotland.