For more than 30 years, Jonathan was at the vanguard of the rediscovery of British Twentieth Century Art from his townhouse gallery in London's Park Walk, Chelsea.

In 2017 the business relocated to a mews house in a private square in Clapham and may be visited by appoinment. 

The company continues to trade from its extensive inventory of painting and sculpture aswell as represent the estates of a number of leading Modern British artists such as Ivon Hitchens, Kenneth Armitage and Ceri Richards along side St. Ives artists Roger Hitlon, John Wells and Brian Wynter.