William John Peter Ritchie

Atelier Ten Ltd. engages in environmental design consulting, building services engineering and lighting designing services. It offers environmental design, MEP engineering, energy analysis, lighting design, master planning, benchmarking, carbon management, fire engineering, healthy buildings, verification and incentives and funding services. The firm has offices in Glasgow, Edinburgh, New York, New Haven, San Francisco, Doha, Bangkok, Singapore, Melbourne and Sydney. The company was founded by Patrick Bellew in 1990 and is headquartered in London, the United Kingdom.

Part of Atelier Ten Ltd., Atelier Ten (Scotland) Ltd. is a leading environmental design consultancy and building services engineering firm. Founded in 1990, the company is based in London, UK. Atelier Ten specializes in finding ways for buildings to use energy efficiently and tread more lightly on the planet. The British company offers bespoke solutions for both new and existing buildings, and are known for their solid track record in mechanical, electrical, and public health engineering. The company's services also include lighting design to illuminate spaces with beauty and efficiency.