Mark studied History of Art & Architecture (BA Hons), and began his career as a porter and Junior Cataloguer at Bonhams, before moving to Sotheby's where he was a Specialist in the Collectors' Department. Became director of an internet company forming and running a ground-breaking deal with eBay Live Auctions. Was co-author of the internationally published Collectables Price Guide with Judith Miller from 2002-17. Founded his own publishing company in 2005 and has published over 15 books on emerging specialist subjects in the decorative arts. A Miscellaneous expert on the BBC 'Antiques Roadshow' since 2007 and an expert on the BBC's 'Antiques Road Trip', has also co-presented five primetime TV series on antiques and collecting for BBC2. A member of the British Antiques Dealers' Association (BADA.org). An experienced auctioneer having consulted for numerous auction houses, and founded one. Strategic Advisor at a company offering digital solutions to the antiques industry. Has lectured across the world, including at the V&A in London, and contributed to many newspapers, magazines, radio and TV programmes. A Freeman of the Worshipful Company of Arts Scholars and a Freeman of the City of London.