Intaglio Printmaker, 9 Playhouse Court, 62 Southwark Bridge Road, London, SE1 OAT  tel- 020 7928 2633 Smiths Metal Centre, 42-56 Tottenham Rd, London N1 4BZ. 0207 2412430 (also plastics and stainless steel) Forward Metals Ltd., Saxon Way, Chelmsley Wood, Birmingham, B37 5AY  tel- 0121 779 4888 Dore Metal Services, 46 Imex Business Park, Flaxley Rd, Birmingham B33 9AL. 0121 6245750 Builders Iron and Zinc, Millmarsh Land, Enfield En3 7QA. 020 8443300