Our Comprehensive Range of Gas and Heating Services

Our expertise lies in delivering comprehensive facility management solutions that optimise operations and create a conducive environment for success. This includes gas installation, repairs and maintenance; heating system installations and servicing for commercial properties; and chimney inspection and flue plotting.

Top Accredited Engineers Keeping Your Business Compliant.

With esteemed accreditations including CHAS, Gas Safe Register (No. 181573), IGEM, and Achilles, SEM Facilities ensures the highest standards in facility management. Our team are all Gas Safe and Safe Contractor approved engineers, providing expertise and commitment to deliver reliable services that exceed expectations safely. Trust us for professional and efficient facility management solutions. See our accreditations below.

Welcome to SEM Facilities

Exceptional Mechanical and Commercial Engineering

SEM Facilities Ltd has delivered outstanding mechanical and commercial engineering services since 2002. Specialising in commercial gas and heating engineering, as well as chimney and flue inspection, we prioritise customer satisfaction and provide top-notch solutions to diverse clients. Our impressive portfolio showcases our commitment to excellence, with prestigious contracts from renowned institutions and blue chip companies.

Recently Completed Projects

AT SEM Facilities, we understand portfolios have the power to provide peace of mind. Browse our range of recently completed projects and find examples of our excellent work, below!

25 September 2023

Thorney Court

27 July 2023

Gas System Purge in Salisbury

7 June 2023

West London High School

1 June 2020

Islington Council for Woodside Contract Services

1 June 2020

University for the Creative Arts

1 June 2020

Samsung SDS Headquarters, Weybridge Surrey

2 May 2020

IQ Student Accommodation

4 October 2019

Arkle – No. 6 Buckingham Gate

7 July 2019

London Management Company – Rutland Gate

Find Commercial Engineering Experts at SEM Facilities

When it comes to commercial engineering expertise, SEM Facilities is your trusted partner. With a wealth of experience and a team of highly skilled professionals, we specialise in delivering top-notch mechanical and commercial engineering services. Whether you require commercial gas engineering, commercial heating engineering, or chimney and flue inspection, we have the knowledge and expertise to meet your needs. Trust SEM Facilities for expertise you can rely on.

Engineers Available for Commercial Facilities

We work in a variety of commercial facilities, providing much-needed installations, repairs and maintenance solutions.

Installation and Repairs for Educational Facilities

We work in a variety of schools and universities, providing installations, repairs, and maintenance to ensure they are in safe condition.

Office and Corporate Building Maintenance

SEM Facilities experienced engineers excel at conducting repairs and maintenance, ensuring offices are in great condition.

Urgent Repairs for Retail and Hospitality

Having completed work in many retail and hospitality establishments, our engineers can follow strict timelines for any project.

Meet the SEM Facilities Team

Chris Pocock AFF IGEM

Chris Pocock AFF IGEM

Managing Director

Managing Director of SEM Ltd, with overall responsibility for overseeing company control and development. Dealing with a number of blue chip companies such as Mitie, ISS Technical Services and Integral UK Ltd across vast contracts such as Lloyds Bank, Barclays Bank, B&Q and, on the domestic side, maintaining flats for Greggs Bakers plc.

Callum Pocock AFF IGEM

Callum Pocock AFF IGEM

Associate Director

Experienced Commercial Gas Engineer with a demonstrated history of working in the mechanical and commercial engineering industry. Callum is skilled in HVAC, Plumbing, Maintenance, Procurement, and Engineering and works as Associate Director of SEM Ltd commercial and domestic heating company based in Caterham Surrey.

Molly Haselden

Molly Haselden

Account Manager

Molly joined our team as an Account Manager, bringing excellent customer service skills which help us to provide an exemplary service to our customers within our management office. An experienced commercial account handler, with a demonstrated history in the insurance and retail industries, Molly is a naturally calm problem solver. 

Client Testimonials

SEM Facilities have been on our approved suppliers list for many years, and have carried out all aspects of Gas related works on our mobile portfolio to a professional high standard.

We have always found SEM to be reliable, trustworthy and extremely obliging, they work to our company processes and are flexible to the working situations.

Gerry Connoly


All of us at Porters are very grateful for your prompt attention to our boiler room breakdown. We were almost at the point of evacuating the building until your guys turned up at the door as arranged. As it turned out (despite our panic) the problem was relatively minor and you charged accordingly. Your billing reflected the fact and your honesty is to be commended.

Jon Porter


As an FM company we at IQPS strive to use high quality and efficient engineers. SEM Facilities have proved to be a call above the rest with their extensive knowledge of all systems irrelevant of size or age.

Their happy and confident approach to tacked anything we throw at them fills us and our clients with great confidence. Keep up the good work from all of us at IQPS.

Toby Ford


I can confirm our company has employed SEM over many years covering aspects of Gas and heating on contracts ranging in scale from a few thousand pounds up to £250,000. We continue to retain their services as we have found that their standard of works and professionalism is second to none.

We would have no hesitation in recommending them if you have any Gas or heating projects where a very high standard of workmanship is required.

John Putnam

Opus Facilities ltd

As contract manager for M and E across 4 University sites, I have struggled to find a reliable contractor to maintain the combustion plant. A colleague of mine recommended Surrey Environmental Maintenance to me 4 years ago and I haven't had a need to go elsewhere. I have found them to be professional and technically capable. Quoting and administration is quick and proficient. Always happy to respond to urgent calls, giving time scales and great advice as required.

The most important thing is their honesty, if they cannot do something, they will tell you.

John Holcroft


Our Recent News

Stay updated with SEM Facilities’ latest developments and industry insights here. Keep informed about the latest trends, innovations, and success stories in facility management and commercial engineering.

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Services for Schools
Customer Service | 24 August 2020

Services for Schools

Specialist engineering and maintenance support for schools and colleges We are fully qualified gas, heating, plumbing, electrical and air conditioning...

Kerry Jones joins SEM Facilities
Customer Service | 2 May 2020

Kerry Jones joins SEM Facilities

Kerry Jones launches our South West division We are delighted to welcome Kerry Jones to our ever growing business, enabling us to expand our services to the...

Customer Service | 2 May 2020


Tracking our engineers with new technology In order to keep a closer eye on the efficiency of our customer services SEM Facilities have now installed the...

Get Hydrogen Ready
Gas | 10 March 2020

Get Hydrogen Ready

Making the change to hydrogen heating In the UK we already have 100% natural gas grid, and as of 1996, under current regulations, all gas boilers installed...

Gas Safety is our business
Gas | 2 October 2019

Gas Safety is our business

Gas Safety Week… all year round! SEM: THE GAS SAFETY SUPERHEROES Gas Safety Week may have been and gone back in September but at SEM Facilities EVERY...

SEM Facilities – Frequently Asked Questions

Our FAQ guide is your go-to resource for all the information you need. Whether you’re curious about our services, seeking expert advice, or have common questions, we’ve carefully curated this guide to ensure you find the answers you’re looking for.

To reach us, simply fill out our convenient enquiry form or give us a call at 02034750999. We’re here to assist you and provide the best possible support for your needs.

Our team of experts specialises in providing comprehensive solutions for commercial gas engineering, commercial heating engineering, and chimney flue inspection. With our in-depth knowledge and experience in these areas, we deliver top-notch services to meet your specific requirements.

Absolutely! At SEM Facilities, we prioritise customer satisfaction. Every contract with us includes a dedicated account manager and staff who are committed to meeting all your needs. We believe in providing personalised attention and exceptional service to ensure your experience with us is smooth and hassle-free.