About Eminox

Making a difference

We want to make a difference, becoming part of a more environmentally focused manufacturing industry and improving air quality around the world.

Eminox drives innovation and success to provide sustainable engineered solutions which meet and exceed stringent demands of the current marketplace.

With over 40 years’ experience in the automotive industry, we support our customers with our in-house research and development facility, which allows for extensive testing of products before final production. This saves our customers time and money in the development process.

As keen problem solvers, our expert engineers work in partnership with you to design exhaust aftertreatment systems for bus, truck, rail, marine and non-road mobile machines (NRMM) around the world. They’re able to work to your specifications and the standards you need.

All Eminox products are designed in the UK and manufactured in our state-of-the-art facilities.

What makes us industry leaders

Worldwide facilities

As part of the Hexadex Group, Eminox has access to manufacturing facilities across three continents in seven countries, providing a truly global presence

Family owned

The growth of Eminox is supported by Chairman of Hexadex Group, Will Milles, and son of Eminox founder David Milles. A family business since 1978

Complementary businesses

The group acquires new businesses, which are either complementary to its existing activities, or where it can use its core expertise to add value

Manufacturing excellence

Eminox is the only UK exhaust manufacturing company to hold the CL 1 EN 15085-2 Rail Welding Standard

1,200 staff and counting

The Hexadex Group employs over 1,200 professionals across its five subsidiaries. These include Eminox, Teconnex, Ceramex, Hooton Engineering and CWM Automation

Growing sales

The group is continually growing and in 2018, the net sales of the Hexadex Group was £121 million


We are part of the Hexadex Group