In London Mr Hirst presides over two large industrial units producing the butterfly-wing pictures and his photo-realist paintings. In the Gloucestershire countryside he leases two wartime aircraft hangers for the manufacture of the spot paintings, the spin works and the formaldehyde tanks. He also has a large workshop and an exhibition studio. More than 180 people work for him, creating Damien Hirsts. Two specialists oversee the formaldehyde unit, which on a visit in July contained four dead ponies, a wild boar, an upended cow and, in good “Godfather” style, a horse’s head in a plastic bag.