Martin Brockman works in wood, clay and printmaking. Projects have included many site-specific carved wood pieces, Installations for the Festival Hall, Kew and the National Trust; community kiln and sculpture projects at the University of London and across Britain, as well as exhibitions of his woodcut prints.

Among the few contemporary artists whom John admired, Breon O’Casey ranked high in his estimation.  To follow this connection, Breon's daughter Duibhne Gough and Guy Royle, who assisted him for many years, both show collections of their latest jewellery.