The scheme will transform Colegrave House above The Plaza shopping mall.
Work will see ISG substantially reconfigure and fit out four storeys of existing accommodation to create new offices for the owner of high street brands including, Burton, Dorothy Perkins, Evans, Miss Selfridge, Topshop and Topman.
The multi-phased construction programme will enable Arcadia staff to remain in occupation within the building throughout the duration of the scheme.
The top-down approach will see ISG carry out significant enhancements at roof and sixth floor level, before progressing down the building to deliver a further three floors of high specification office accommodation and a spacious corporate reception area at ground floor level.
Designer for the scheme is Sheppard Robson architects with Gardiner & Theobold as consultant.
Work includes the construction of two glazed roof structures over existing courtyard areas within the centre of the building, creating full height atria.
The 155,000 sq ft Cat B fit out programme, incorporates a comprehensive strip out of the existing accommodation and replacement of all mechanical and electrical services with modern efficient systems.
Work started on site this week and is scheduled for completion in summer 2015.
Sir Philip Green and ISG’s David Lawther seal the deal
Arcadia CEO Sir Philip Green said: “All of us here at Arcadia Head Office are excited by the prospect of this innovative and dynamic HQ.
“Our design teams have worked closely with ISG, Sheppard Robson and Gardiner & Theobold to create a space that draws on our experience as fashion retailers and look forward to creating a truly 21st century working environment.”
Paul Cossell, managing director of ISG Fit Out, said: “We continue to be encouraged by noticeable improvements in the volume, scale and quality of London commercial office fit out projects reaching the market.
“ISG is taking a leading position in securing some of the capital’s most prestigious projects and adding Arcadia’s UK headquarters to our growing portfolio is an excellent result and further reinforces our expertise and high quality delivery credentials.”
The stunning south atrium