Waterman Group, the engineering and environmental consultancy, has benefited from strong organic growth to increase to report a "solid performance".

The group, which carried out civil engineering consultancy services on improvements to Moor Street Station and at Birmingham Airport, increased sales to £83.7 million from £72.7 million last year.

The increase helped the firm improved pretax profit 15 per cent from £3.8 million to £4.2 million in the year to June 30.

The company, which employs 250 people at its offices in Birmingham and Solihull, won a number of new projects during the year and was boosted by broadening its services, including the introduction of its environmental services.

The company said it now had an order book of two years' worth of work following a string of new appointments including the Trocadero in London, the former Stock Exchange Tower and Watermark Place, also in the capital.

Key international projects include the Point Depot concert venue in Dublin, the International Financial Centre in Dubai and 600 metre tall Moscow City Tower, with overseas projects now representing 20 per cent of firm's sales.

In the Midlands, the firm has been working on the redevelopment of the Grace-church centre in Sutton Coldfield, while it has also begun design work on the redevelopment of the Pallasades in Birmingham.

Waterman said its civil engineering activities have grown significantly during the year, with increased turnover in the rail, highway and development infrastructure sectors.

Contracts included working with Solihull council on improvements to the A45 and the introduction of bus only red routes in the borough.

The group's environmental consultancies, Waterman Environmental, Waterman CPM and Waterman Sustainable Energy, also increased their work among industrial clients and utilities.

Waterman Environmental delivered an increasing number of environmental impact assessments (EIA's) and strategic environmental assessments (SEA's), which are needed for new planning applications.

Due diligence reports have been provided in connection with a number of large corporate transactions with an aggregate value in excess of £10 billion.

In the UK, the range of services is being extended by the addition of new energy and environmental services.

Outside the UK, the drive continues to build on early successes in Australia, China and the UAE, with additional resources being provided to handle the increasing workload in Ireland and Eastern Europe, the company said.

Bob Campbell, managing director said: " We are delighted with the performance that the group has delivered.

"Most of the growth has been organic.

"We have taken steps to broaden the services that we offer and, we are benefiting from the increased range of opportunities that are available to us. We have grown across all sectors of the business.

"There has been a significant growth in the demand for our multi-disciplinary services."

Mr Campbell said the growth anticipated further organic growth while it continued to evaluate a number of bolt-on acquisitions.

Philip Sparks, an analyst at Evosecurities, described Waterman's figures as a solid performance.

He said: "The numbers were bang in-line with expectations.

"The momentum Waterman has built up over the last couple of years shows no signs of dropping off, and a number of high profile project wins have left it with an enviable order book."