He owns two art dealerships, Artdeal and Andartis. The larger of the pair, Artdeal, was founded in 1997 and is based in Kingsway in central London. Latest figures at Companies House show Artdeal has assets of £641,000 for the year ended 31 January 2001, down from £1.1million previously. He set up Andartis with his son, William. Of the firm's 600 shares, Archer owns 510 shares while William holds 90.