Fraser Bond are the leading lettings and property management agents for Westfield London - London W12. Westfield London, the pioneering shopping and leisure destination, opened in W12 on October 30th 2008. - It took 13 million man-hours to build - Cost £1.7bn - Construction used enough concrete to fill 117 Olympic swimming pools - There are 96 escalators Designed to convey the intriguing interplay between water and light, the most striking feature is the undulating glass roof, which is made up of thousands of solid and clear panels. These have been carefully positioned to maximise natural light.