Harry Powell at the Whitefriars glassworks designed for several of the important Arts and Crafts exhibitions. He developed a range of engraved designs, coloured glass and also layered glass with silver and gold inclusions as a direct response to criticism of his plain glass designs produced for the 1896 Arts and Crafts exhibition reviewed in the Studio magazine. The glass was criticised for its 'lack of colour, its effect was too monotonous'. At the 1899 exhibition the glass was championed for its decoration 'sprinkled all over with gold upon an opaque basis of blue, green and red. Powell often finished his glass with silver mounts and covers designed and produced by the Guild of Handicrafts.