Last year, the firm revealed a former employee had taken the money over a number of years from the accounts of its subsidiary business DG Robson Mechanical Services (DGR).
In a trading update today, 27 January, the Group announced it will make a provision of £2.2m in its next results due to the internal fraud.
"Further to our announcement on 31st October 2016, the 2016 results will include exceptional charges and provisions in relation to the internal fraud at our DGR subsidiary," the company said.
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"These are estimated at £2.2m, including a provision for professional costs of £0.4m directly associated with our efforts to recover the misappropriated funds.
"Profits for the year are expected to be in line with market expectations after reflecting the full impact of the accounting adjustment for the fraud in the period, other than the provision for related professional costs referred to above. Legal proceedings to recover the misappropriated funds are ongoing."
Elsewhere, the building services group has secured a number of new project wins including two London office fit out projects for a social media client and a major asset manager client, along with projects at The University of Gloucester Business School & Growth Hub and The Plymouth History Centre.
(LM)
