Having been knighted in 1979,[3] Walton was created a life peer on 24 July 1989 as Baron Walton of Detchant, of Detchant in the County of Northumberland[4] and sat as a crossbencher. In 1992 he became a member of the Science and Technology Committee, leaving in 1996, returning in 1997 and leaving again in 2001. From 1993 to 1994 he was Chair of the Medical Ethics committee. He was Secretary of the Rare Diseases Group from 2009 until his death.
He wrote an autobiography The Spice of Life: From Northumbria to World Neurology in 1993. It had 643 pages and, according to the review in the BMJ, “tells you absolutely everything [but] by the end of the book you really know nothing about him except that he has a colossal memory.” [6]
Death
Lord Walton of Detchant died on 21 April 2016, aged 93.[7]
Arms
Coat of arms of John Walton, Baron Walton of Detchant
Issuant from Clouds proper a Sea-Horse Argent the Piscine Part proper crined and finned Or holding between the forelegs a Cross Formy quadrate fitchy at the foot Purpure
Escutcheon
Paly wavy Argent and Gules a Castle triple towered Purpure on a Chief of the last three Crosses Formy quadrate Gold
Supporters
Dexter: a Boar Gold suspended from the neck by a Riband Purpure a Clarion pipes downwards Gules; Sinister: a Greyling Goose proper