Gwyn Headley (born 1946 in Harlech) is a British entrepreneur, architectural historian and writer.
As a child Headley lived in Accra, Gold Coast (now Ghana); Krumpendorf, Austria; Berlin, Germany; Warsaw, Poland; Westmalle, Belgium and Paris, France before his family settled in Chelsea in 1959. He was educated at Haileybury and Imperial Service College, Hertford, Westminster City School, London, and at Saint Martin's School of Art, London.
Living in Chelsea in the 1960s, he formed The Sloane Squares, a beat group which played many venues across the capital, supporting John Lee Hooker, Jimi Hendrix, Pink Floyd, the Small Faces, Eric Clapton, Peter Frampton and others. Lead singer Pete Gage later became the front man for Dr. Feelgood.
He now lives in London and Harlech.
He began work in book publishing in 1967 at George Newnes and started his first consultancy Headley Hesketh Associates in 1976. This evolved into HPR, a publishing and theatre marketing consultancy which promoted several West End hits and had nine No. 1 best-sellers, including The Country Diary of an Edwardian Lady. In 1991 with Keith Price he launched Pavilions of Splendour Ltd, the first estate agency to deal exclusively in listed buildings, and which in 1993 became the first UK estate agency to have a website. The agency closed after Keith Price died in 2004.
In 2002 HPR was taken over by fotoLibra. fotoLibra. the first open access, entirely digital picture library was created by Headley in 2002 and launched in 2004. A digital publishing company within the group, Heritage Ebooks, was launched in 2011 with forty titles.
Headley is President of the British Mah-Jong Association. With Yvonne Seeley he wrote Know The Game: Mah-Jong in 1977. The book has sold over 500,000 copies and is the standard rule book for the game in Britain and the Commonwealth.