Warwick-based design consultant Grant Thorp is to rework international publishing group Reed Business Information's base in Sutton, Surrey. Quadrant House accommodates 1,700 staff and has not been refurbished since the 1970s. Grant Thorp's challenge is to develop an 'innovative' design as part of a multi-million pound office overhaul. Reed sees the project as a key to retaining staff. It will also allow the publisher to use the building for extended hours for a variety of other business activities.