En Masse Design Limited
Chartered Building Services Consulting Engineers providing Mechanical, Environmental, Electrical, Plumbing & Expert Witness Services


About Us
En Masse Design, established in October 2001 and located in Surrey, is a team of Chartered Building Services Consulting Engineers dedicated to delivering expert Mechanical, Electrical, and Plumbing design solutions for a variety of building projects. Our extensive experience spans collaborations with Blue Chip Companies, High-Net-Worth individuals, and Architectural practices of all sizes. We take pride in our impressive portfolio and our commitment to evolving as a modern practice. We enhance traditional methods while embracing innovative technologies to ensure comfort, safety, and energy efficiency in every project we undertake.

Personnel
Principal Director
Leon Gadsdon BEng(Hons) CEng MCIBSE MEWI
Welcome to En Masse Design Ltd.
My career in engineering began as a plumbing apprentice, culminating in an honours degree in building services and environmental engineering, which has equipped me with a comprehensive understanding of the construction industry's dynamics. In addition, I provide expert witness services for disputes in the Building Services Industry. Outside of my professional commitments, I enjoy fitness and playing music in a band.
Services

Mechanical Electrical & Public Health Consultancy Services
We design and specify the MEP services from commencement of a project to completion. Our expertise includes but is not limited to:
Statutory utilities applications and negotiations
Air conditioning and comfort cooling systems
Heating plant, radiators, underfloor heating
Mechanical ventilation systems
Natural ventilation and passive design
Building automation, BEMS control systems
Renewable energy technologies, solar, wind, ground source and air source heat pumps
Public health hot and cold water, above and below ground drainage, rainwater collection and recycling systems
Electrical services power, standby generation, UPS and Transformers
Internal and external lighting and controls, emergency lighting
Fire systems incl. fire alarms, sprinklers, misting systems.
Security, access control, CCTV

Technical Services Reporting & Surveying
We routinely carry out MEP surveying and reporting duties for clients on their existing services comprising:
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Asset condition and pre-acquisition reports
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MEP dilapidation claims
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Technical feasibility studies
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MEP commissioning and validation reports.
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MEP budget cost advice
We ensure our reports are concise, results focused and written in terms that are easily understood.

Civil Expert Witness Services
As principal of En Masse Design, I have expert witness accreditation from Cardiff University Law School.
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I produce comprehensive, court-compliant expert witness reports. I can act as a party expert or a single joint expert.
As a Chartered Mechanical Engineer, I possess extensive practical and academic knowledge obtained over a long-established career. I can use these skills analytically to determine the root cause and find workable solutions to technical problems. I can interpret and present facts, opinions and conclusions concisely.
Projects
Accreditation's





Contact
Thorncroft Manor
Thorncroft Drive
Leatherhead
Surrey
KT22 8JB
Reception: 01372 224 745 Mobile: 07766 078 318