Business Businesses in Fitzrovia initially consisted of tradesmen, craft and fashion producers. Today the district still house several major advertising agencies, a number of television and post production companies . New media groups and art galleries have replaced the photographic studios of the 1970s -90s. A number of architects, interior designers and landscape architects and urban planners are based in Fitzrovia, while Derwent London own about one million square feet of property – about one fifth of their total portfolio – and Arup who own many buildings around their world headquarters in Fitzroy St. The prevalence of these industries is reflected in the proliferation of development and building in the neighbourhood.