A Chartered Insurer by profession and a Fellow of the Assurance Medical Society, with extensive international experience as an author and lecturer in Medical Risk Assessment. He has in excess of 25 years of working and living in Asia. Whilst living in Hong Kong (1991-2004) he assembled a collection of approximately 700, predominately Qing Dynasty (1644-1911), Imperial and related textiles/costume accessories. Past Committee Member of the Hong Kong Textile Society and frequent speaker on Imperial Insignia and Badges of Rank.

David can organise and lead Imperial Art Tours to China for Societies. In late 2019 the Collection of Imperial Court Costume was acquired, in its entirety, by The Shanghai Musuem, Peoples' Republic of China to be displayed in the new annexe of the museum which opened in 2021.