With years of architecture and design experience through out the United Kingdom, and accreditation from the ARB  – paired with aesthetic drive, strong ethics and constant curiosity – we know how to make space work harder for you. These are the people whose surroundings bring more to each and every experience.




Grant Shepherd is a designer, architect, educator and writer from the United Kingdom who has a passion for multidisciplinary design processes working across all of the creative industries. Grant is the co-founder of Alter & Company, which was founded in 2016. He works closely with clients across commercial, residential and public sectors. Grant has a deep interest in cultural innovation, new developments in art, interior, landscape, urbanism and architecture. As well as a practicing architect Grant is a senior lecturer and has taught undergraduate levels at Kingston University London and the University of Brighton. He is also a visiting critique to many of the UK schools of Architecture. Grant is a trustee member of a number of different community organizations. In addition, he has served on many awards juries and boards. 



Leith Mckenzie is a designer maker and architect from Australia, with a passion for the craft of making objects, spaces and architecture. Leith is invested in understanding how the world around us is formed, and in turn how we can implement effective and positive change. Leith has a background in housing, commercial, retail and public sector architecture as well as master planning & Strategy. Leith is the co-founder of Alter & Company, which was founded 2016. Leith’s role in the company is one of design strategy and delivery. As director, Leith is responsible for managing the Alter and Company team, developing business, management and communication strategies. Leith is actively involved in critique sessions at a number of architectural schools around the United Kingdom and in developing a number of research projects in relation to academic processes.