About Us
Your Partner in Heat Networks & Heat Engineering
Since our journey began in 1991, DMG Delta has evolved into a trusted maintenance partner within the property sector. With over 30 years of experience, we’ve proudly maintained numerous buildings – both old and new – and some properties have been with us since day one.
Our experienced team is the heart of our company. From our accredited engineers to our customer service team, every member is dedicated to understanding and fulfilling our clients’ needs.
Residential property heat maintenance and engineering services:
With innovative technology combined with excellence in engineering and maintenance, we not only maintain buildings efficiently but also help them operate sustainably, leading the way towards a net-zero world.
We continue to prove that we are the ideal heat and energy partner for any property management business. Over the last 30 years, we’ve built a track-record of standing by our values and a reputation that goes beyond simply delivering heat and energy management services – to building successful, long-term partnerships with our clients, suppliers and customers.
Our People
At the heart of everything we do is a simple mission: delivering exceptional customer service alongside top-tier engineering solutions. We believe
that great results come from a team that feels valued, supported and inspired to grow.
We prioritise the fulfilment and development of our people, knowing that when our team thrives, so do our clients. By fostering a culture of continuous learning and improvement, we ensure that every individual has the tools, training and opportunities to succeed.
For us, delivering exceptional service starts with strong leadership and open communications. With a commitment to innovation and excellence, backed by our Investors In People Silver accreditation, we empower our people to deliver solutions that meet the highest standards of quality and performance.
Rupert Mackay
Managing Director
Dave Collins
Director of Contracts
Malcolm Bunker
Director of Operations
Shaun Salmon
Head of Finance
Mike Buckley
Financial Controller
Kirsty Speakman
Operations Manager
Lee O'Flynn
Technical Services Manager
Sarah Swaby
Service Desk Team Leader
Mick Walsh
Senior Contracts Manager
Ricky White
Contracts Manager
Chris Abrams
Contracts Manager
Michael Marriott
Contracts Manager
Bekky Newman
Junior Contracts Manager
Sarah Fowke
Group Marketing Manager
Jessica Warwick
Business Development Manager
Dovile Balionyte
QSHE Consultant
Sara Ellis
PA to Managing Director / Group HR
Kim Moules
HR Coordinator
At DMG Delta, we’re all about sharing ideas, celebrating successes, and rewarding hard work. We’ve created a dynamic, flexible environment where you can grow, thrive and reach your full potential. Take the next step in your career — explore our vacancies today
Who we work for
Managing Agents
Developers & BTR
Housing Associations & Councils
Resident Managed RTM & RMC
Our Work: Case Studies
Discover how our clients are benefiting from our tailored energy solutions. Explore real-life case studies and testimonials to see how we’ve helped property managers achieve their goals — and how we can do the same for you.
Deluged Energy Centre
Dorset House, London
Emergency Call Out
Parkgate Aspen, London
Planned Maintenance
Ilford
HIU Maintenance
Lewisham
New Heating Plant
London
Our Core Values
At DMG Delta, our values guide every action and decision, forming the foundation of both our daily operations and long-term strategy.
We believe in providing dependable, professional service while maintaining the highest safety standards, with our OHSAS 18001 Health and Safety certification as proof of that commitment.
We hold ourselves accountable to these principles. No compromises. No excuses. We proudly believe that standing by these values ensures we do things the right way, and that’s the only way we work:
Personal Service
We are passionate about providing a professional yet personal service. Our experienced and dedicated team is always ready to respond to all of our clients’ needs. As proud Investors in People Silver Accredited, we believe in nurturing relationships both within our company and with those we serve.
Reliability
We focus on accurately identifying our clients’ needs and delivering services dependably, every time. We prioritise safety for everyone involved, adhering to OHSAS 18001 Health and Safety standards, ensuring that our services are transparent, safe and reliable.
Integrity
We remain true to ourselves and to those we work with. Transparency, honesty and consistency form the foundation of our work ethic. We never make promises we can’t keep, and we are always clear in our dealings with clients, partners and suppliers. No shortcuts, we’ll take the right road over the easy road every time.
Dedication
We are fully dedicated to contributing to the success of our clients, partners, customers, employees and shareholders. Every decision we make and action we take is rooted in this value.
Excellence
We believe in going beyond the extra mile for every single person we work with, from our own staff to our residents and every one of our clients; consistently delivering exceptional, transparent levels of service and support.
Our Credentials
At DMG, we understand the importance of reassurance when managing energy and heat networks. Our commitment to excellence is supported by industry-leading accreditations to ensure we deliver the highest standards to our clients.
With a focus on compliance and quality, our accreditations demonstrate our dedication to doing things the right way. Every certification strengthens our ability to provide reliable, efficient services that you can trust.
These certifications are more than just badges – they are the foundation of our processes, helping us consistently improve and meet the needs of property managers like you.
Industry Recognition
We’re proud to have been recognised within the industry for our commitment to excellence, sustainability and innovation, reflecting the trust our clients place in us and the impact of our work.
