PCA is a contemporary RIBA (Royal Institute of British Architects) Chartered Architecture practice based in Winchester, Hampshire founded in 2012 by Paul Cashin.

Although relatively young, the practice has undertaken projects across the UK and overseas with currently a number of live projects in residential and commercial sectors spanning Southern England.

PCA is committed to a creative and design-led perspective to the architectural process, believing that well thought and considered design is essential to the creation of successful architectural space.

As a small practice, our strength lies in our inclusive and personal approach, working directly with clients, consultants, and contractors, encouraging the cross over between architecture and other areas of art and design.

We believe in the importance of process to architecture and design, working through a range of media including physical and computer models, hand and computer drawings, sketching and conceptual diagrams, discussions and presentations.




Chartered Architect

Paul Cashin

BA Hons (arch), Dip Arch (dist.), ARB, RIBA


Paul studied Architecture at the Universities of Portsmouth and Vienna, graduating in 2011 with an RIBA Presidents Medal nomination. He has worked for numerous practices, including Design Engine Architects working on contemporary university, school, housing and one-off house building projects between 2008 and 2012. Paul has also taught at the University of Portsmouth and was a member of the Project Office for the school. Paul started PCA in 2012 which has set up offices in Winchester in 2016.

Paul is an RIBA Chartered Architect registered with the ARB.


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Ollie Cradock

BA Hons (arch), MArch (dist.), ARB


Ollie completed his architectural training at the University of Portsmouth in 2017. Prior to this he graduated from both Oxford Brookes University and the University of Westminster. He completed his Masters of Architecture with a distinction and studied under Sean Griffiths of FAT. Ollie has previously worked in practice on contemporary one-off houses and large extension projects. Prior to this he has worked for Foster + Partners in London, as part of the team delivering the Apple Campus Headquarters building in California.

Ollie is an ARB registered architect. 




Ewan Gibson

BA Hons (arch), Dip Arch (dist.), ARB


Ewan studied Architecture at the Universities of Portsmouth, graduating in 2011. He has worked in practice since helping to deliver a variety of projects including contemporary schools, housing and one-off houses. Ewan has also taught at the University of Portsmouth and was a member of the Project Office for the school.

Ewan is an ARB registered architect.