Deeside-headquartered scaffolding group NSG UK said sales grew by 10% in 2010 to £18m following a management buyout in May.
The company employs 450 staff, with 22 at the head office in Deeside, and secured contracts last year including a three-year deal in Speke with global pharmaceutical firm Lilly, construction works for Vinci at Whiston Hospital, Knowsley, and a £65m bio-energy facility being built by drinks giant Diageo in Fife, Scotland.
NSG declined to give profit figures for the year. The accounts have yet to be filed at Companies House. Michael Carr, managing director, said: "We have maintained growth in the construction and engineering sectors while expanding into the rail, social housing, marine and off-shore, and oil and gas sectors. We also see the resurgent nuclear industry as a key market for NSG UK and we are always looking at ways to expand our portfolio."
The company was acquired by MWB in February 2008 but was bought back by managers in May last year. The company's clients include Ineos Chlor Vinyls, Ineos Enterprises, Centrica, Corus and Cammell Laird.
Carr added: "The management team and all our staff deserve credit for their resilience and we are looking forward to 2011 with vigour."