Accountancy firms are often derided as mean-minded bean counters. But this grey image is having a green makeover in London, where two of the world's biggest, KPMG and PricewaterhouseCoopers (PwC), have opened new headquarters - just kilometres apart - that seemingly try to outdo the other in cutting-edge green design.
PwC, whose black glass building across the river from the Tower of London has been likened to a Batman logo, has installed a facility that provides 25% of its electricity and 20% of its heating and cooling, and is run on recycled potato chip fat sourced in the capital.
