Educated at Bromsgrove School and University of Bristol, Quayle entered the Foreign Office in 1977 and studied Thai at the School of Oriental and African Studies, University of London. As a junior diplomat, Quayle studied at Chiang Mai University.
Before being sent to Romania, Quayle"s previous Diplomatic Service postings included: Bangkok, Thailand (Second Secretary, Political) Paris, France (First Secretary, Political) Jakarta, Indonesia (Deputy Head of Mission) Quayle served as British Ambassador to Romania from 2002 until 2006, after which he was concurrently appointed as Her Majesty"s Ambassador to the Kingdom of Thailand and (non-resident) Ambassador to the Lao People"s Democratic Republic. He took up this post in August 2007, succeeding David Fall, and was replaced in November 2010 by Asif Ahmad. Quayle spent a lot of time in his roles as Ambassador promoting trade and investment and worked very closely with the British Chamber of Commerce in Thailand (BCCT).
His job directly before his posting to Bucharest was as International Group Director with United Kingdom Trade and Investment.
He works as an advisor to Prudential, De Louisiana Rue, Ophir Energy and Sindicatum Sustainable Resources and is a lay member of the Queen"s Counsel Selection Panel.
