Tyrrell Dowinton Associates
Brian Tyrrell


Having trained at Southampton University, Brian returned to Guernsey in 1999 and continued his training at a local Architectural practice.

Brian, together with Paul Dowinton, established Tyrrell Dowinton Associates in 2003, developing the technical aspects of the practice.

Continuing his training with the RIBA through Oxford Brookes University Brian has developed his skills in architectural visualization and design utilising the leading industry software including ArchiCad, Artlantis Render, 3D Studio Max, Vray and Photoshop.

Brian has worked on a number of large projects including commercial and residential developments in Jersey, Guernsey and the UK..

T: 07781 134375
E: btyrrell@tda.gg
L: Linkedin

Paul Dowinton
Director, Chartered Architect

​BA(Hons) DipArch. RIBA

Having trained at the University of Portsmouth, Paul returned to Guernsey in 1993 and qualified as a Chartered Architect in 1994.

Paul helped develop the architectural department at a large local Chartered Surveying Practice becoming Director of Architecture in 2000. Paul formed Tyrrell Dowinton Associates in 2003 with Brian Tyrrell and has seen the Practice develop and expand to the success that it is today.

Paul has had in excess of 30 years experience in the Construction Industry and has worked in both Guernsey and the UK throughout this period.

Paul has worked on a number of large projects including the refurbishment of Beau Sejour Leisure Centre, a number of Guernsey Housing Association projects as well as Residential Care Homes in Hastings and Deal for charitable trust, Martha Trust.

T: 07781 134374
E: pdowinton@tda.gg
L: Linkedin

Jason Dowinton
Technical Director & Architectural Technologist

BSc(Hons), MCIAT

Jason is a Chartered Architectural Technologist with over 30 years experience in the local construction industry and following study at London South Bank University gaining a First Class Honours degree in Architectural Technology he was awarded the prestigious Lillian and Henry Stevenson prize and the Worshipful Company of Constructors Award for Construction in 2006.

He has worked on many large projects completed within the island in all building sectors including commercial offices, multi-unit residential developments, industrial buildings and individual private houses. His expertise lies in the technical aspects of the detail design through the construction phases to completion and delivery to the client.

He has also lectured on the BTEC Building Studies courses at the Guernsey College of Further Education passing his knowledge onto the next generation of young designers and construction managers.

T: 07781 104141
E: jdowinton@tda.gg
L: Linkedin

Alan MacLean
Chartered Architect
Alan MacLean


Alan trained in architecture at the University of Strathclyde in Glasgow, being nominated for the RIBA Student Silver Medal in his final year.

He moved to Jersey in 1988 and for over 20 years has been a practice principal based in the New Forest from where he has carried out projects throughout the South of England and the islands of Guernsey, Jersey and Alderney.

Alan currently manages the UK Practice.

T: 07850 386319
E: amaclean@tda.gg
L: Linkedin

Stuart Bloese
Senior Architectural Technologist
Stuart Bloese


​Stuart began working under the States apprenticeship scheme in 1990 before studying architecture at the University of Portsmouth.

Following graduation he then worked at Robert Adam Architects, where he became an associate. Returning to Guernsey in 2007 Stuart worked for a local Architects practice for seven years before joining Tyrrell Dowinton Associates.

Stuart has worked on a wide variety of projects including high spec. housing, office developments and a number of Guernsey Housing Association projects and brings a wealth of CAD knowledge to the firm.

T: 07911 740686
E: sbloese@tda.gg
L: Linkedin

George Nichols
Architectural Technologist

ACIAT, BSc (Hons)

Having joined the States Apprenticeship Scheme in 2010, George gained a National Diploma in Construction and the Built Environment whilst gaining experience within the industry at a local Architects practice.

George joined Tyrrell Dowinton Associates in 2013 whilst continuing to study towards his HNC with the Guernsey College of Further Education.

George’s role involves carrying out measured surveys and producing drawings for both Planning and Building Control.

T: 07850 435852
E: gnichols@tda.gg

Chris Holmes
Architectural Technologist

BSc (Hons)

Chris graduated from the University of Brighton in 2013 with a BSc (Hons) in Architectural Technology. He then gained experience working for a care home and housing developer working on developments across the South of England. Chris has worked on a variety of projects including high profile residential developments in London.

Chris joined Terrell Dowinton Associates in 2018 and works with Alan in the Southampton office where he provides technical support.

T: 02380 283343
E: cholmes@tda.gg
L: Linkedin

Jamie Le Tissier
Senior Architectural Technologist

​BTEC, HNC Building Studies

Jamie began his career working for a local Architectural practice in 2002 and successfully qualified as an Architectural Technician in 2005 through the Guernsey College of Further Education’s apprenticeship scheme.

Jamie joined Tyrrell Dowinton Associates in 2019 with over 16 years’ experience in the local construction industry having worked on a number of large projects including commercial, residential, industrial and private sectors.

His drafting, technical and visual expertise lie within the BIM environment which is recognised as the new industry standard in architectural design.

Outside of work Jamie has a passion for photography, primarily landscapes and wildlife.  His love for the outdoors and his home island of Guernsey can be seen in his photographs.

T: 01481 259959
E: jletissier@tda.gg
L: Linkedin

Adam Wakeford
Architect Assistant

BA (Hons) Interior Architecture & Design

Adam gained a degree in Interior Architecture & Design from Arts University Bournemouth in 2016. He returned to Guernsey and has been working in the architecture sector since.

Adam plans to continue his study with a degree in Architectural Technology whilst working for TDA.

Over the next few years he hopes to gain sufficient qualifications in order to take his Part 1,2 and 3 and become a chartered architect with the RIBA.

Adam has experience on many different software programs including AutoCad, Revit, Sketchup, Photoshop, InDesign & Muse, as well as social media and website management. Adam’s particular interest is with rendering and photorealistic montages.

T: 01481 259959
E: awakeford@tda.gg
L: Linkedin

Laurie Le Cheminant
Office Manager


​Laurie started her career within the finance industry working for a high profile financial institution.

Deciding in a change in direction Laurie joined a local Architectural practice where she worked with Brian and Paul.

Once Tyrrell Dowinton Associates was firmly established, Laurie joined the team in the role of office manager and is instrumental in the day-to-day running of the practice.

T: 01481 259959
E: llecheminant@tda.gg
L: Linkedin