There are many people who have contributed to this site who will remain unknown. Denis's system of filing photographs was rather haphazard, but these photographs are invaluable as a record of his output. Thank you to anyone who gave Denis a photograph of his work.

The list of those who can be thanked will grow, but here is the start.

Malcolm and Rachel Hill, collectors of Denis's work and firm friends of his over many years.

Stephen Pasinel of the Paisnel Gallery, London, who has allowed us to use images of Denis's work.

The Belgrave Gallery, St Ives, for the use of their images.

Sotheby's Auctions, London, for the use of their images.

Tommy Rowe, Denis's long term assistant and a font of knowledge and stories.