Our Culture

people at meeting

We have always placed a strong emphasis on our values. Our success has been built on the quality and commitment of our people and their ability to work with each other, challenging and supporting where appropriate to create a team with a common goal and purpose.

Our Vision

To be the nuclear industry’s preferred partner.

Our Mission

To build a company that clients and suppliers want as a strategic partner; that employees are proud to work for; that our competitors admire; and that our communities and shareholders recognise as adding value.

Our Core Values

Perform with enthusiasm to achieve our objectives and aspire to be the best at what we do.

Be open and honest and act ethically with a right first time attitude.

Question the way we do things and look to improve on processes and techniques to deliver value to our stakeholders.

Working together with all stakeholders and sharing best practice to provide the highest level of customer satisfaction.

The Group

The NIS Group of Companies consists of NSG Environmental Ltd, NIS Ltd and Hold Engineering Ltd. The underlying focus of the Group is to provide bespoke technical and engineering solutions to a wide range of industries. Whilst the dominant market for the Group is nuclear, we also have strong links with the aerospace, consumer electronics, security, and food industries. By working in diverse markets, we are able to adopt best practices from one and introduce these to another, which leads to innovative and unique solutions in meeting the client's needs.


NSG was originally formed in 1982 through a joint venture, Wimpey-Gilbert, to service the nuclear decommissioning market. In 1985, the Wimpey-Gilbert name changed to Nuclear Services Group, although the main shareholders remained Wimpey Laboratories and GC Engineers with the addition of Birds Commercial Metals Ltd.

As the business grew to encompass land remediation, the company became NSG Environmental Ltd in 1990. During this period, the company also developed strong ties with CEGB and Nuclear Electric, becoming more and more involved with waste management development programmes and operating from two sites in Slough and Bolton.

In 1993, the company was put up for sale as the owners returned to their core businesses and the Slough office was closed. As NSG had a number of significant development contracts and was seen as a key player in nuclear decommissioning, the company was bought by NIS Ltd, who themselves had a long history in the nuclear market, and NIS Holdings Ltd was formed as the parent company. Following this, NSG moved from their premises in Bolton to a facility on the former Leyland Trucks site with a total of twelve staff.

During the next ten years or so, the company expanded its business and secured significant contracts with AWE and Magnox Electric, establishing itself as a leading company within the nuclear waste management and decommissioning field. By 2007, it had outgrown its premises in Leyland and moved to its head office at Scientia House, Chorley. Today, NSG employs over 170 staff at various sites across the UK.

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