// About DMA

Our Story

As an independent, privately funded family business, our primary focus remains our people and our customers.

A heritage to be proud of

We’re proud to have enhanced our 200 year legacy, primarily by keeping our services relevant to our customers. We differentiate ourselves, we’re innovative and tech-savvy, and we’ve added value to our customers’ businesses as a result.

// Our History

In 1803 George III was on the throne of England, William Pitt was Prime Minister, Napoleon declared war on England…. and George Henry Denne bought a barrow!

G H Denne grew from humble beginnings into a renowned provider of construction and property services. In 1859 a directory listed ‘G.H. Denne’ as a builder and farmer, then in 1887 Kelly's Directory listed ‘G.H. Denne and Sons’ as Builder, Contractor and Funeral Directors - coffin-making was the beginnings of our joinery business!

A century of growth and expansion

Our construction business led the way by designing, building and maintaining many buildings across London and the Southeast for banks, pharmacies, healthcare, schools, colleges, homes and commercial buildings, including all the mechanical, electrical, plumbing and drainage installations too. In 1997-98 we began delivering building and technical maintenance services to Canada Life and Kings Hill Business Park and we’re proud to say they’re both still customers today.

The birth of DMA

In 2003 Denne Maintenance implemented a leading edge technology system to computerise the management and scheduling of our field based service engineers using handheld devices. In 2006, the c.£80m pa Denne Construction business was sold to the Dutch company Heijmans NV, as part of its expansion into the UK. As a result, DMA Group was born through the retention of our Denne Joinery, M&E installations and building maintenance businesses. This included the retention of a 30 year PFI contract for the upkeep and maintenance of 17 residential care homes across the Southeast.

2007 to present

During 2007 to 2013, our M&E installation business grew serving large builders and main contractors delivering hospitals, schools, colleges, universities and iconic buildings in the London. 2015 saw the start of our transformation into an integrated Life of Building service provider, with significant investment in technology and our leadership team. Our Denne Joinery customers now benefit from our large investments into state of the art manufacturing systems and plant, as well as new spraying and finishing facility. In 2018 Graham Tong our veteran joiner retired after 50 years of service and we doubled our annual turnover supporting customers like WeWork and the new Spurs stadium!

A visit from His Royal Highness The Duke of Kent

It was a great pleasure to meet His Royal Highness The Duke of Kent and show him around our joinery factory. We couldn't let him leave empty handed so the team created a beautiful handcrafted draughts board!

// Our Culture

Inspiring our people to make buildings work together

Our Vision

Our vision is to be the UK’s leading Life of Building services provider to mid-sized business owners, occupiers, managers and advisors. Our DMA brand will be recognised for Great People, Great Service and Great Results.

Our Objectives

Great People:
We have a highly engaged people culture, with a depth of in-house experience and accessible senior leadership for all of our customers.

Great Service:
A combination of our simplified Life of Building model and Bio technology allow us to focus on what’s important to you while providing 24/7/365 customer care.

Great Results:
We simplify and streamline operations to save you time and cost, all the while delivering a noticeable improvement in the quality of work.

Our Values

It’s all about the Re:SPECT for ourselves, our colleagues, our partners and our customers. We:

Share our success with each other and our customers
Have Passion for quality
Embrace diversity
Have a Can-do attitude
Win through Teamwork