Leighton joined ExA in 2012,  bringing a wealth of experience from a number of the UK's leading landscape practices. He is experienced in the conception, development and implementation of landscape projects to the highest standards. He is an excellent communicator as well as an innovative designer at multiple scales and has extensive experience in developing responsive solutions for complex urban landscape projects. The work he undertakes at ExA is underlined with a drive to deliver the detail behind sustainable, liveable and enjoyable spaces.




Sam founded Exterior Architecture in 2003.  His work covers a variety of scales from 100 acre agricultural parks to high end podium and roof terraces. His client focused service has won many accolades and the quantum of repeat business he has generated is testament to his level of skill, care and attention he brings to each project ExA undertakes. Sam has a keen interest in planting design and extensive horticultural knowledge which he applies to both urban and rural projects with great effect. He has won awards for garden design at Chelsea Flower Show and at the BALI awards.




Jonathan brings wide ranging experience to ExA, having worked in large international, multi- disciplinary firms, as well as small single-discipline practices. Projects vary from private and public sector housing, large and small scale master planning, LVIA, tourism development, urban regeneration, city centre public realm and education schemes. He excels in multidisciplinary work, receiving positive feedback on design, written and project management skills. He relishes opportunities to coordinate and manage the successful delivery of projects.




With over 13 years’ experience of working on projects in the UK and internationally. Paul has a breadth of experience at all stages from design through to construction and site supervision. He has also worked on a broad range of projects of varying scales from private residential developments through to large scale master plans. For most of his professional career he has been based in London working on schemes connected with new developments though he also has experience of working in the Middle East and has worked on several award winning projects. Paul has a strong enthusiasm for the profession and a desire to meet the Client’s needs whilst helping to create high quality and sustainable landscapes.



ExA has a team of 20+ staff based in studios in Battersea, Central London & Central Manchester who are dedicated to the achievement of strong, legible, innovative landscape design. The practice has a highly committed and enthusiastic team of young landscape architects who have been hand-picked according to their variety of skills and abilities.

Individuals in the ExA team have a strong track record in public realm, estate landscape, major garden projects and parks. As an equal opportunity employer ExA values the skills and abilities of its staff and seeks to culture and progress their professional experience by encouraging their progression through professional accreditation processes and a range of in-house and external training opportunities.


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