Our practice combines the best architectural and technical skills with a high degree of professionalism and a friendly, personal approach.

We believe that buildings are ultimately about the people who live and work in them. We are spatial interpreters of our clients’ dreams, analysing patterns of living and working to provide a bespoke result, however big or small the project. As no two projects are the same, we come to you with an open mind, a willingness to find a solution to your spatial needs and an extensive network of contacts to help you translate your vision into reality. We work across a broad spectrum of projects, from small-scale internal alterations for residential properties to large-scale new-build projects, as well as office refurbishments.

These strands come together occasionally in mixed-use developments. We specialise in obtaining complex planning permissions. We also have design experience in other sectors, such as sports and leisure, visual arts and education.

The practice is run by Principal Architect Simon Miller, BA ‘Hons’, AA (Dip), RIBA, Associate Derek Owusu-Afriyie and Director Frances Gertler, supported by a range of highly experienced architects and technicians.


Simon Miller – Director

Derek Owusu-Afriyie – Associate

Justine Charlesworth

Frances Gertler

Judit Martinez Cerezo


Photographer: Ankit Govind



“I've worked with Simon Miller on a number of occasions. It's their attention to detail and ability to maximise space that I would hire them for time and time again.”

Suzanne Noble

“Our needs were always listened to and the finalised plans true to our vision. Having this ‘one truth’ throughout provided confidence that all parties were aware of what was required”

Mr Scorch

“Simon really listened to what we wanted - we are delighted with the end result. We have a Grade II Listed house that has been radically changed giving it a contemporary edge”

Paula and Andrew Plaskow

“Simon was at hand dealing with Structural Engineers, Building Control and crucially the Builder. He sat with us to understand our lifestyle and what we wanted to get from the space available."

Sam and Gaby Dony

“I felt I had to write to express our thanks and gratitude. It was a pleasure to work with you – your ideas are imaginative... ensuring a high quality finish within the agreed budget.”

Polly Faber

"This is the second time I have used Simon and as usual he didn't fail to impress. I would highly recommend Simon Miller Architects as they provide a great personalised service"

Amit Rabheru

"From beginning to the end of the project we found SMA most helpful and professional in the design and supervision of all aspects of the work and were also impressed by the way their complete staff dealt with us in a friendly and informative manner. We have no hesitation in recommending SMA"

John Hoffman - Hofftone Property Investments Ltd