About – Mill Design

Mill Design is an RIBA Chartered Practice founded in 2017 by Simon Miller. Based in the centre of Kings Cross the practice works with clients across London and the South East to deliver projects of genuine architectural quality.

Every project is approached with the desire to understand and develop the clients aspirations whilst exploiting the opportunities presented by the surrounding context. We advocate the importance of a thorough design process, from establishing the initial client brief through to construction and completion, ensuring the final built product is one of value.

Ingenuity and artistry coupled with experience and expertise ensures the successful completion of our projects. Mill Design is a production house of creativity and deliverability.



About Mill Design


Our Time

Mill Design operates across the architectural and interior scales. Digital 3D working is central to our design process and enables us to consistently deliver our fluid design development processes. Our digital 3D working enables our clients to gain a clear spatial understanding of the design developments in the form of pre-visualisations.




Interior Design




Mill Design – Director

Simon Miller – Director

Architect + Interior Design

Contact Details
t: 020 3652 3598
m: 07929 033234

Simon is the founder of Mill Design. He is a registered architect and RIBA member. The breadth of his experience ranges from a small boutique for the Monmouth Coffee Company in Borough through to the luxury high-end fit out for Barclays Investment Bank in Canary Wharf, the redevelopment of the BBC in Northern Ireland and the Royal Mint in the City of London.

​His project experience covers the urban, architectural and interior design scales from initial project briefing through to construction and completion. He brings twelve years professional experience to Mill Design and having recently completed the interior fit out for Monzo Bank HQ in Shoreditch he is currently the project architect on the Mamoth Galleries and Creative Workspace project, a six storey redevelopment in Bloomsbury.

Simon graduated from the Canterbury School of Architecture with distinction and remains involved in architectural education through teaching. He oversees the MArch Design Realisation studio at the Canterbury School of Architecture and co-runs the MArch Design Studio 19 at the University of Greenwich.

​Prior to architectural education his background was in the fine and digital arts which continue to inform his work.

​Aside from architecture, Simons passion is sailing, he is the Sponsorship Director for the construction industry regatta Little Britain Challenge Cup, held in the Solent annually.





Our Clients


Monzo Bank​

Offices​ | Shoreditch, London


Retail​ | Chelsea, London

Java & Jazz

Hospitality | Forest Row, Sussex


Hospitality and Residential | Westminster, London

Work. Place. Create.

Offices | High Wycombe, Buckinghamshire

Pico Clinics

Healthcare​ | Soho, London

Mammoth Gallery | Art and Culture

Cultural | Bloomsbury, London

University for the Creative Arts

Education | Canterbury, Kent

Park Place

Residential | Islington, London


Residential | Tunbridge Wells, Kent

The Tate

Cultural​ | Chelsea, London

University of the Arts London

Education​ | Pimlico, London

Ying Global

Residential​ | Hampstead, London

Neal Mathews UX

Residential | Crouch End, London

University of East London

Educational | Docklands, London