Chris Cowper BA (Hons) Dip Arch RIBA
Partner & Design Director

Chris is the founding partner of the practice set up in 1980, with a wide range of experience on projects, including both contemporary new build and work on listed buildings within historic environments or landscapes.

He has completed a number of major commissions as senior designer or partner in charge for; higher education projects, including the University of Cambridge; English Heritage; Cambridge Colleges; Schools; The National Trust; Research sectors; Commercial organisations and clients in the housing sector including private houses.

He frequently leads design teams on national competition entries, including by invitation from English Heritage, for the Stonehenge Visitor Centre project, where the practice was placed in the top three. Chris is a strong believer in the process of designing by creating a strong multi-disciplined team, working to expand the boundaries of the project. He has been involved in sensitive and controversial planning projects often involving the insertion of contemporary buildings within the historic environment.

He has a keen interest in the genuinely sustainable process of both planning and constructing buildings, currently working on European and Lottery funded projects in south London and elsewhere.

Many of the projects have received national and local Architecture Awards. He is currently working on a major housing project for Winchester College in Hampshire, contemporary housing within an historic Norfolk Estate, and a new library, common room, admin and additional accommodation for Wesley Hall, one of the Theological Colleges in Cambridge.  

As Design Director he has recently completed the New Visitor Centre at Stowe for the National Trust, which involved both the restoration of a derelict Georgian Inn, the reconstruction of its original range forming the Coaching Yard, together with a set of contemporary buildings forming the major part of the facility. The project cost was £9.0m.

A highly complex design demanding many different skills and experience in all design sectors, the building opened in mid February 2012, and has won six Regional & National design awards, with the National Trust also receiving Client of the Year Award for the building, at the Stirling Prize in 2013.

Chris also designed The Arboretum, a private house on the North Norfolk Coast. The project has recently won RIBA East ‘Building of the Year’ and Regional Award in 2014. The practice also won RIBA East ‘Architect of the Year’ 2014, for 30 years of consistently high quality design.

-  Member of the Fabric Advisory Committee for St Pauls Cathedral

-  Consultant Architect for Churchill College Cambridge 2006-8

-  Member of the RIBA Validation Board for the Environmental Design in Architecture-MPhil course at University of Cambridge School of Architecture 2010


Tim Powter-Robinson BA (Hons) Dip Arch RIBA

Tim Powter-Robinson was educated in Norwich and graduated from Leicester School of Architecture with a first class honours degree with Distinction, and the William Kaye Design Award for outstanding student in 1985. He joined Cowper Griffith Architects in 1993 and became a partner in 2000. 

Tim has built up a wide range of experience on a great variety of projects which include both contemporary new build commissions, as well as work on listed structures or buildings within historic environments.

Tim also has extensive experience in equine based projects around Newmarket, having successfully built or obtained consent for three residential and stabling complexes set within the countryside, over the last ten years.

His projects include a number of major commissions for the University of Cambridge including the extensions to Madingley Hall, for the Board of Continuing Education; The BP Institute for Multi-Phase Flow for the Department of Earth Sciences; the new MRI Research Centre for the Department of Chemical Engineering; the refurbishment of an existing building as offices for the Cambridge Programme for Sustainability Leadership, a lecture theatre for the Dept of Zoology, and a new laboratory for the Department of Plant Sciences.


Other projects recently completed include a large residential care project of 25 flats and a community centre for the Trustees of the Great Hospital in Norwich; the enhancement of facilities at Flatford Mill, Suffolk for the Field Studies Council & The National Trust; a new Music School for Ipswich School in Suffolk; additional residential accommodation, admin facilities, library and common rooms for a Cambridge College; a new assembly hall for a primary school in Norwich; classrooms and assembly hall at a major independent school in Hertfordshire.


Simon Redman BA (Hons) BArch RIBA

Simon studied in Newcastle, and spent his first five years working in London and Norwich, primarily on education, healthcare and residential projects.

In 2007 Simon joined CGA where he became senior project architect for a number of major commissions, including the conversion of a large, Listed Essex workhouse, a variety of school projects ranging in value from £0.5 to £2.5m and a series of bespoke residences across East Anglia. Six of his school projects form part of a single strategic masterplan for sustainable growth through the intelligent re-use and extension of existing assets.

Simon became a partner in April 2012.  His focus has been heritage-led regeneration, masterplanning and bespoke design across all disciplines, particularly in education, public and residential sectors.

He has recently completed the sensitive conversion and modest extension of the historic Officers’ Mess at IWM Duxford. He is also spearheading a HLF scheme to convert an iconic canalside building in central Birmingham, on behalf of the National Trust.

His masterplanning work includes a bold thirty year vision for Worth School, Monastery and Estate, the completion of the office park masterplan at archeologically and ecologically sensitive Thremhall Priory and a variety of studies to reorder and optimise sites containing existing structures, ranging from rural barns to urban chemical plants.

Other projects include artists’ studios in central Cambridge, and all types and values of domestic work, to include one-off coastal houses, conversion of Listed barns and Methodist Chapels and medium scale speculative developments with affordable units. He also leads numerous bids and competition entries.

Simon is particularly excited by opportunities to enhance by conversion and insertion, to bring order and clarity to groupings of buildings and to make vibrant, sustainable places to live, work, learn and play.


Adrian Small BA (Hons) MSc (Arch) Delft RIBA

After graduating and working at CGA for five years, Adrian spent four years in The Netherlands where he completed his studies in Delft with a specialist Masters course rMIT in the conservation and reuse of existing buildings. Whilst carrying out his studies in the Netherlands he assisted with the translation, into English, of the book ‘Inleiding in de Bouwhistorie, Opmeten en Onderzoeken van Oude Gebouwen’ (Introduction to Building History, Survey and Research of Old Buildings).

Adrian has been with the Practice since 1995, his early works include among others: several substantial high quality houses for private clients, including a £2.0m classical summer house conceived as a folly in the grounds of Buscot Park, which was highly commended by the Georgian Society, a sensitive award winning office scheme for the reuse of redundant buildings in Bedfordshire, and award winning conservation work in Cambridgeshire.

More recently Adrian was senior project architect for the new £6.3m Visitor's Facility at Stowe Gardens, Buckinghamshire for the National Trust, which included the restoration of a grade II* former coaching inn, the rebuilding of a lost range forming the Inn yard and extensive new-build and contemporary facilities, using sustainable structures built from the Trusts own woodland. The project was completed in 2012 and has won five national design awards, including the RIBA National Conservation Award and Client of the Year at the Stirling Prize 2013.

Adrian became a partner in the practice in April 2012. He has recently achieved planning consent for the restoration and conversion of C18 farmbuildings to residential use adjoining Anstey Hall in Trumpington, near Cambridge. The project has been the subject of many attempts to gain consent, by others over the last 20 years.

Currently he is lead designer on a new Multi-purpose Hall for Haileybury College seating 800, set beside the listed buildings of the College; A number of high quality residential projects including two houses in North London, one at construction stage and the other at design stage; three Contemporary barn conversions for the Holkham Estate in Norfolk; a recording studio set both in a Nature Reserve and within the coastal flood plain and contemporary housing within an historic walled garden, adjoining a village Church.


Karen Lim BArch (Hons) Grad Dip Cons (AA) Mst (Cantab) AABC RIBA


Karen studied at the University of Nottingham, receiving the Dutton Walker Art Prize and a First Class Honours degree and the regional RIBA award for her final design thesis.
In 2002 she undertook a post-graduate course in building conservation at the Architectural Association School of Architecture. While at the AA Karen was awarded the Zibby Garnett Travelling Fellowship for research associated with her dissertation leading to the diploma in 2004. In 2008 she became a member of the professional conservation body ‘Architects Accredited in Building Conservation’. In 2011 she became an approved consultant for the Diocese of Ely to work on church restoration projects and quinquennial inspections. In 2012 she undertook a part time master’s degree in ‘Building History’ at the University of Cambridge. The course was the first of its kind run jointly with English Heritage (now Historic England) from whom she was awarded a Bursary. She graduated in 2015. 

Karen joined Cowper Griffith Architects in 2000. She was the project architect for an eight- year project to conserve and restore Stiffkey Old Hall, a Grade II* listed 16thc mansion house in Norfolk, completed in 2012. She was conservation architect for the Stowe Project for the National Trust involving the restoration conservation and part reconstruction of the eighteenth century Inn and outbuildings. This gained the RIBA Conservation Award in 2013.

Karen was project architect for the extension and refurbishment of the Parish Rooms at Little St. Mary’s Church, Grade II* listed church in Cambridge adjacent to Peterhouse College, which gained the David Urwin Design Award in 2011, as the best conservation and extension of an existing listed building within the City of Cambridge. In 2013-14 she completed a project to refurbish and extend a Grade II* listed, early Georgian house in Great James St, Bloomsbury.

This was highly commended by the Georgian Group in 2015. In 2017 work was completed on an HLF project to restore and regenerate the Grade I listed site of Heckington Windmill in Lincolnshire.

Karen is currently involved in the conservation and alterations to Calverley Old Hall; an HLF project to conserve the David Parr House in Cambridge; the re-ordering of the Grade I listed chancel at Michaelhouse in Cambridge; work to renew the lead and install photovoltaic panels to the roof of Great St.Mary’s, the University Church in central Cambridge; alterations to a Grade II listed house in Painswick, involving the extension and restoration of the former watermill; the refurbishment and conservation of a 17thc timber-framed house in Suffolk. 




Abigail Shaw
BA (Hons) Dip Arch ARB

Sarah Wells
BSc (Hons) BArch (Hons) ARB RIBA


Senior Architects


Ann Bassett


Alice Milligan
BArch (Hons) Dip Arch ARB RIBA

Jonathan Capek
BSc (Hons) MArch ARB RIBA

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Melanie Cossette
Dipl-Ing (FH) ARB RIBA

Neil Charlton
BA (Hons) Dip Arch ARB


Matthew Smith
BA (Hons) Dip Arch ARB RIBA


Stuart Everatt
BA (Hons) MArch ARB

tom brown .jpg

Tom Brown
BA (Hons) Dip Arch ARB RIBA


Passivhaus Consultant


Rachel Furze
MA Cantab CEPH Consultant


Architectural Assistants

Simon Murgatroyd.jpg

Simon Murgatroyd
BSc (Hons) MArch - (Part II Assistant)

Neringa Stonyte.jpg

Neringa Stonyte
BA (Hons) MArch  - (Part II Assistant)

Phillipa Beaumont.jpg

Phillipa Beaumont
BA (Hons) Architecture - (Part I Assistant)

Joseph Elbourn.jpg

Joseph Elbourn
BA (Hons) Architecture - (Part I Assistant)

Practice Management


Keira Gibson
BA (Hons) Business Management