The firm has confirmed that its Tonbridge office will close as part of the ongoing restructuring of UK construction.

The Tonbridge office is the regional headquarters for the South East and was established in 2008.

ISG said: “As previously reported, we are restructuring and reducing our UK Construction business to four regions focusing on repeat customers and frameworks in core sectors.

“To complete this restructuring, we have taken the decision to discontinue activities from our office in Tonbridge, which we expect will result in a loss from discontinued operations of £3.5m in the current financial year.”

ISG said the market is improving but the construction division is still suffering from low margin work negotiated more than a year ago.

It said: “Current margins continue to be commercially challenging on projects entered into more than a year ago.

“However, with the market now improving and with recent project wins generally being secured under better procurement routes, we anticipate seeing an upturn in margins from 2015.”

Latest half-year results for the construction division show it booked just a £100,000 profit on turnover  of £234m.

Overall results for the year to June 30 are expected to be in line with expectations thanks to significant growth in the Fit Out and Engineering Services markets.

An ISG spokesperson told the Enquirer: “We have been reorganising our UK Construction business over the past couple of years to focus on being a smaller business targeting repeat clients and frameworks.

“By reducing our open market tendering activities, it has exposed our Tonbridge operation as being unable to align with this strategy, and we have taken the decision to discontinue activities from this satellite office.

“We anticipate that fewer than ten members of staff will be directly affected by this decision.

“Our guiding principle is to achieve redeployment across the business wherever possible.”