Consultant Robert Benaim has expanded the group's ownership to include four new shareholders.
Last year control of the Benaim Group went to four directors in a management buyout, with assurance that the shareholding would increase within two years.
The new shareholders - Robert Cook, Jim Paterson, Nick Southward and Ghassan Ziadat - are already directors of Benaim Group companies. All eight shareholders are practising civil and structural engineers.
Consultant Babtie increased turnover for the 2000 financial year by 28%, up from £95M to £121M. In the same period operating profit fell from £4.4M to £3.1M, blamed on delays in capital spending on water projects in England and Wales and the introduction of best value, holding up key local government projects. Acquisitions have strengthened the group: structural engineer Allot & Lomax, quantity surveyor Murdoch Green Kensalls and transportation consultant Ross Silcock have all been integrated this year.