About Us

SJ Construction is leading construction company and a main building contractor based in London. Our bespoke projects involve only the very best architects, project managers and tradesmen.  As a leading Design-and-Build company with offices in London, we offer high quality Residential and Commercial Construction Services, Architectural services via our in-house Architects, and can offer a full Design-and-Build service where requested.

Via SJC Project Management, we also offer our Construction expertise and Project Management across the UK, to large construction companies, main contractors, architects and construction consultancies.  Our industry-leading Project Management team have been responsible for major Construction projects across London, the Home Counties, and the United Kingdom.


David MontgomeryManaging Director
David has 17 years’ experience in the property and construction sectors. He began his career at Savills, before moving into Property Development and then Construction Project Management for private clients. David oversees the general direction of the business, and is responsible for key decision-making, operations and the strategic expansion of SJC.
Steven AldridgeProjects Director
Steven has 20 years’ Management experience in residential construction and refurbishment in Central London. His completed projects are known to be immaculate, and has been responsible for countless high end, bespoke residential construction projects in Central London. Steven’s responsibilities include Project Management, Development and Quality Control.
Sand ChudhaDirector of Architecture
Sand is an Architect with 15 years’ experience working on some of the most exquisite residential projects in Central London. His extensive architectural experience extends across the UK, and internationally. Sand combines great passion for both architecture and interior design. He joined SJC after 9 years at Thorp Design and 6 years at Donald Insall Associates.
David DibollHead of Project Management
David has 30 years experience in the Construction industry in the South East of England. After 15 years as a Project Manager at Bovis Lendlease, he spent 4 years at Mace Construction as Operations Director, before progressing onto Morgan Sindall as Construction Director, and following that, Construction Director at Haig Construction.
Hugh CholmondeleyHead of Account Management
Hugh has an account management and business development background within the property development and construction sectors. Prior to joining SJC Group, Hugh was an account manager at Quintessentially, managing the lives and construction projects of high net worth individuals and families. Hugh has a strong network within the high end construction sector.
Aston FreemanHead of Finance
After graduating from The University of Oxford with 2:1 in Politics, Philosophy and Economics, Aston joined PwC as an accountant, before progressing into Investment Banking at Barclays. He then joined Morgan Stanley in New York as Vice President of the Investment Management Division. Prior to joining SJC Group, Aston was Financial Director at a Financial Executive Search Agency in London and New York.

Project Management Team

Aleks WozniakProject Manager
Olaf MazurProject Manager
Stefan DebskiProject Manager
Pawel KowalskiProject Manager
Nikolaj BaranProject Manager
Lukas NowakProject Manager
Stanislaw NowakSite Manager
Michael RossiterProjects Coordinator
Jonathan EdmundsProjects Coorindator
Simon ShephardConstruction Manager
Joe HarveyProjects Coordinator
Annabel EatonOffice Manager