As a practice we pride ourselves on having a friendly and professional team of enthusiastic staff that offers innovative design solutions coupled with a high level of personal service, expertise and experience.

The expertise and up-to-date knowledge of our staff goes hand-in-hand with a best possible client service. To this end the continued development of our staff is key to our success in maintaining high standards of design and technical knowledge. The practice organises monthly Continued Professional Development (CPD) seminars which are open to all construction professionals.  In addition to this, a number of our senior staff sit on advisory boards and committees as well as speaking and attending various architectural seminars and forums within the sectors we work.

 Under the leadership of our Senior Management Team we have a dedicated structure of support staff which includes Architectural Technicians and Technologists, Researchers and Administrative staff.




Architectural & Expert Witness Staff

David Cowan
Architect | Expert Witness

Phillip Mumford
Managing Director

David Callin

Marisa Shek
Architect | Expert Witness

Nigel Marcoolyn


Simon Duffy
Associate Director
Architect | Expert Witness

Mark Elton
Director of Cowan Eco Design
Architect | Passivhaus Designer


Edmund Lamptey
Architect | Expert Witness

Emma Smyth

Gavin Hill
Architect | Expert Witness

Julia Hockin
Architect | Expert Witness

Jonathan Cerowski
Senior Architect

Michael Kennedy
Senior Architectural Technician

Sarah Goad
Senior Architectural Technician

Jacqueline Lutaaya
Architectural Technician

Poppy Keenor
Architectural Assistant


Administration Staff

Camilla Wilsnagh
Administration Manager

Deborah Kettle
Litigation Administrator

Jane Day
Expert Witness Assistant

Maria Latella
Finance | Invoicing

Caroline Tulloch

Carol Potts
Expert Witness Assistant

Rhona Stevenson
Litigation Administrator

Georgia Munnery
Administration | Reception

Emily Stevenson