Work is set to start imminently on the major commercial office refurbishment scheme which covers four buildings on the site and will be renamed the Aldwych Quarter.

ISG will deliver over 300,000 sq ft of Cat A office accommodation.

Work will involve the sensitive strip-out of the buildings to shell and core before comprehensive modernisation of the internal space including installing new mechanical and electrical services, replacing 14 of the existing lifts and delivering an additional lift to enhance accessibility.

Three of the buildings are targeting a BREEAM Excellent environmental performance rating and ISG will achieve significant sustainable enhancements through improved insulation and the highly efficient services installation.

ISG will also re-roof all four buildings, clean the façades, carry out masonry repairs and replace a number of windows as part of an external envelope package of works.

Numerous architecturally listed elements will also be cleaned, repaired and preserved, including the Bush House portico, staircases and lobby areas.

The Cat A fit out includes the installation of raised access floors and suspended ceilings, four new high specification reception areas, new cycle facilities and toilets.

Paul Cossell, managing director of ISG Fit Out, said: “A key factor in our appointment to the Aldwych Quarter development was our innovative and flexible delivery programme, providing a significant reduction in project duration.

“Our phased handover strategy allows earlier than anticipated occupation of key areas of the development, providing an attractive potential revenue boost for our client.

“The Aldwych Quarter scheme represents an excellent win for the business and reinforces our high quality delivery credentials as London’s leading commercial office fit out specialist.

“Our expertise delivering complex, large-scale projects within architecturally sensitive environments will undoubtedly prove critical in the successful completion of this landmark London office development.“

The site was hit by a fire last month when a blaze broke out while a demolition subcontractor was carrying-out soft strip work ahead of the main contract starting.