Law firm Stephenson Harwood has awarded the contract for its new offices at 1 Finsbury Circus to the fit-out and construction firm.
The contract is for 130,000 sq ft of office space and is due to be completed for April 2011, when Stephenson Harwood will move in.
In 2008 ISG refurbished the eight-storey, Grade-II listed building.
On 9 September the firm posted a 7% drop in turnover for the year to 30 June, falling from £1.05bn to £972m, with chief executive David Lawther commenting that it was recruiting in London fit-out but not in construction.
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