Costain has recorded a 21% jump in underlying operating profit for the first half of the year.
The firm posted a turnover over of £791.4million – up from last year’s £621.1million.
Its underlying profit stood at £15.8million.
Chief executive Andrew Wyllie said: “We have delivered another strong performance in the first half of the year, with a 21% increase in underlying operating profit, and our order book is at a record level. The dividend has been increased 15% in line with our progressive policy.
“These are exciting times as billions of pounds are being spent upgrading and renewing the country’s energy, water and transportation infrastructure.
“There is a revolution in the deployment of technology-led innovative solutions to meet the increasingly complex requirements of our national infrastructure needs, and we are continuing to rapidly transform the Costain business to be at the heart of the opportunity this presents.
“Costain remains on course to deliver a result for the year in line with the Board’s expectations.”
Despite the positive results, the company leader said it was still too early to formulate a clear outlook post Brexit.
“Following the decision in June to leave the EU, and the resulting political and economic uncertainty, there has to date been no impact on Costain and it is still too early to predict longer-term outcomes,” he said.
“However, we believe that, as a consequence of our strategic focus on the major customers who are continuing to spend billions of pounds addressing critical UK infrastructure needs, we have a resilient business and can see as much significant potential opportunity as any downside in the new environment.”