About Glow-worm

Glow-worm has been building robust, reliable, highly efficient boilers and controls for almost 90 years, to provide the families of Britain with the warmth and hot water they need, when they need it.

Our products are made for homes that are there to be lived in, not just looked at. Whether it’s a hot shower after football training or toasty socks straight off the radiator, we provide that warm glow that keeps everyone glowing.

We are proud of our British heritage, producing boilers back in 1934 at the Derwent Foundry in Derbyshire, where we remain to this day nestled in the lively town of Belper.

We put all our energy into supporting the heating engineers of Britain to keep glowing, so they can keep the homes of Britain glowing. It’s this drive which has led us right to the top, as one of the leading heating manufactures in the UK today.

Made In Britain

To ensure we honour our proud British heritage we have recently been accredited with ‘Made In Britain’ on our Energy, Ultimate and Easicom boiler range.

Made in Britain is an officially licensed mark bringing together the British manufacturing community. It is a non-for-profit organisation that helps to identify and certify British-made products.

The objective of MIB is to unite, support and promote all manufacturers who produce products in the geographical Territory of Great Britain and Northern Ireland to help them leverage proximity, transparency, responsibility and high quality in the marketing of such British and Northern Irish products as a business advantage. They also aim to raise awareness of all British and Northern Irish manufacturing sectors and communicate this strategically in a positive way to businesses and consumers in the UK and overseas.

If you would like to know more about Made In Britain, or find out other businesses who are accredited go to


We pride ourselves in offering exceptional and durable energy solutions, manufacturing some of our most popular ranges of boilers at our state-of-the-art production facilities in Belper, Derbyshire.

Our revered range of products includes domestic gas boilers, such as combi, system and heat only options.

The Vaillant Group

In 2001 Glow-worm was acquired by the Vaillant Group, Europe’s second-largest heating company.

Vaillant employs over 12,000 people across Europe and China, providing innovative heating, ventilation and air-conditioning technologies to hundreds and thousands of homes all over the world. If you'd like the chance to become part of the Glow-worm team click here to view our current career opportunities.

If you'd like to find out more about Glow-worm, please feel free to explore our heritage.