Founded on 5 August 1954, Hammer Prints Ltd was established: "To purchase, sell, manufacture, hire or act as agents for the sale of textiles, wallpaper, statuary, ceramics, furniture and photographic equipment and materials".
Working from a studio at Henderson's home at Landermere Wharf near Thorpe-le-Soken in Essex, they developed over eleven designs that were screen printed onto wallpapers, textiles and readymade ceramic products.
"[1] Hammer Prints wallpapers were manufactured by Cole & Son from 1955, and their textile designs were produced by the Lancashire firm Hull Traders from 1958.
Barkcloth, Big Drawings, Newsprint, Portobello and Townscape followed whilst Sea Beasts and Toys were developed for a range of ceramic tiles, lampstands, bowls, trays and furniture.
The Castle Bookshop on Museum Street in Colchester also held 'an exhibition and sale of bowls, tiles, scarves, textiles and wallpapers from 21 April to 5 May 1956.