Leeds-based firm completed three acquisitions in the first half of the financial year, aquiring transportation consultancy Savell, Bird and Axon; Management Consultants Group, which provides financial management consultancy to the public sector; and Irish engineering services firm PH McCarthy.
The company's pretax profit for the year rose 26 per cent to 16.8 million pounds from 13.4 million pounds last year.
White Young Green's order book was up 20 million to £400 million with over half of it made up of framework agreements which exetend beyong 2012.
In June the company announced its appointment by Carillion to provide multidisciplinary services on the £30 million contract for Nailsea School in Bristol.
White Young Green proposed a final dividend of 6.3 pence, up 17 per cent from 5.4 pence a year earlier.