Price My Conservatory Ltd.br Columbia House - Columbia Drivebr Worthing - Sussex -- BN13 3HDbr Tel: 01903 260842 Fax: 01903 260051br br Based on a typical conservatory that we sell in UK, 3x3m Edwardian conservatory, with a glass roof, French doors, two opening windows, and 600 mm high d walls, that is you basic average conservatory ... will cost you approximately 11,000£.