GDM Partnership


GDM are award-winning Building Services Engineers, with a proven track record in delivering innovative low energy and sustainable design solutions for the built environment throughout the UK, Europe and Overseas.

We have a reputation for providing excellence through a personalised service which results in a high percentage of repeat business.

We were formed in 1990 by Gary Draper and David Moseby with a vision to offer a more accessible and focused service to their clients. The practice now has five board Directors and continues to go from strength to strength.


Our people are our most valuable asset, we recognise that their expertise and diverse range of skills enable us to provide an exceptional service to our clients.

We have an open and broad minded approach to new and developing technologies and our staff enable us to react quickly to these advances within our industry.

A director is responsible for the project review process independent of the engineering team; their role is to ensure that our quality of service is upheld and to encourage innovative design and engineering value.


We have specialist experience in environmentally sustainable design for a variety of construction schemes throughout the UK. Our work also includes option studies, appraisals, due diligence surveys, expert witness and design audits.

As building services engineers we are responsible for the co-ordination of all the elements of a building that use energy and are able to conserve it. We aim to build a co-operatively working whole building that performs predictably and meets energy and emission targets.

Our reputation for imaginative but practical design is based on the way our ideas translate into construction and use. We follow a logical process that stems from a commitment to the project teams vision.

Energy &


Local authorities now require developers to have a percentage of the predicted energy requirement from renewable sources.

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Energy Strategy

An appropriate energy strategy can improve a buildings performance and deliver substantial carbon and financial savings.

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We can satisfy all of your engineering needs, including Commercial and Domestic Energy Performance Certificates.

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We have specialist experience in environmentally sustainable design for a variety of construction schemes throughout the UK.

We believe that we can bring a combination of professionalism, proven technical and delivery skills to the project, combined with an absolute commitment to meet the challenges and to seek wherever possible to exceed the aspirations of the client.

Click on the projects below to view a selection of our most recent successfully delivered projects.


Here at GDM we like to keep you informed on our latest appointments, completed projects, awards, new recruits, industry related topics and generally all the stuff that keeps us busy during the week.

Below is a selection of our latest news items…


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St. Johns House
37-41 Spital Street

T: + 44 (0) 1322 225242
F: + 44 (0) 1322 227273


27-29 Cursitor Street

T: + 44 (0) 207 902 0160