Prime Minister Tony Blair is set to officially open GSK House - a £300 million global headquarters for pharmaceutical giant GlaxoSmithKline where the client has shown a major commitment to public art - in Brentford on 23 May. The new 100,000m 2scheme, designed by Hillier with RHWL and Swanke Hayden Connell, is the biggest single commercial development in the UK. Artworks took more than the usual one per cent of the budget - or well over £3 million - according to Peter Harris, chairman of International Art Consultants. They include 'Abundance' by Jan Blake, an aerial sculpture describing the 'continual flow of repetitious and circular human activity on streets', and 'Athlete'by Allen Jones, a painted steel 'personification of health and strength'outside the building. The scheme consists of four five-storey buildings and a 16-storey tower block linked by an internal street.