The engineering and construction firm now employs 3,688 staff rand relies primarily on in-house capabilities while minimising subcontractor involvement.

Latest results for the year to 31 December 2022 show group revenue up to £1,491m from £1,274m last time generating adjusted pre-tax profits of £45.2m from £17.3m last time.

Net cash increased by 27% to £275.5m in 2022 while staff numbers rose to 3,688 from 3,579 and the order book grew by 13% to £2.52bn.

Chief Executive Officer John Murphy said: “Our direct delivery operating model, supported by a select supply chain, continues to be central to our unique offering.

“At a time when resources are increasingly a limiting factor across the industry, we give our clients heightened confidence of reliable delivery performance.

“I am delighted to present another year of growth for Murphy, demonstrating a continuous, year-on-year improvement in our financial performance and operational delivery as we continue to play a central role in delivering world-class infrastructure.

“These outstanding results are a testament to the hard work and dedication of our colleagues, our focus on sustainable business practices and our strong client relationships.

“As we approach our 75th anniversary in 2026, our vision to be the leading family-owned construction business in the three geographies in which we work is within reach, and we remain focused on delivering long-term sustainable growth and creating a positive and lasting legacy across our projects and the communities we serve.”