LDC will take a significant stake in the company alongside the current management team – led by Managing Director Terry Musson and Commercial Director Daniel East.

Devon based Amberon currently has 18 depots, a 350 vehicle fleet and employs almost 500 people turning over £26m last year.

It provides a wide range of safety solutions to support planned and emergency repairs, from traffic lights, signage and convoy working to variable message signs and CCTV.

Projects range from road closures on low-speed, urban and rural sites to complex, high-speed contraflow schemes on dual carriageways and motorways.

Amberon has recently secured long-term deals with Kier and Murphy Group and is a leading supplier to Amey, Ringway, Balfour Beatty and Tarmac.

The management team plans to accelerate its growth outside of its South West of England and Wales heartland by opening further depots to service work in the Midlands, North West, South East and East.

Managing Director Terry Musson said: “This is an important moment for the company.

“We’ve always had an ambition to continue to scale the business and provide greater geographical reach for our clients.

“Bringing LDC on board gives us the capital and confidence to continue our journey and build on the hard work over the last decade that has made Amberon such a reliable partner in the sector.”