Being green doesn't mean being boring. At Gordon Campbell Gray's hotel One Aldwych, in London's West End, general manager Simon Hirst manages to balance luxury five-star service with successful environmental policies. "Waste is very last-century," he says. "Part of all our growing up - governments, businesses and people - is that we shouldn't waste resources."
A Green Team has been set up to reduce the impact of all business decisions on the environment. It meets once a week to discuss issues and has a budget of about £5,000 to support any projects.
Green policies are being written into every department's strategy. By next March, managers must commit to running departments in a more environmentally friendly way - by measures such as buying only energy-efficient goods and a lights-off policy.
But there's still work to be done. A recent Carbon Trust audit showed that the hotel still needs to reduce its carbon emissions.
So far, policies in place include: