I know of Mark Power pretty well but i discovered this book yesterday in oxfam for £3. Some pretty awesome photographs of the construction of the Millennium Dome (the 02 to us now). Legal urbex, really nice photography. If you can pick it up from ebay or somewhere else cheap then id defintly recommend it.
http://www.amazon.co.uk/gp/aw/d/0002202050
http://www.amazon.co.uk/gp/aw/d/0002202050