The Llewelyn Davies Yeang partner spoke out just hours after the publication of a National Audit Office (NAO) report, which found that less than 40 per cent of carbon saving measures identified by the Carbon Trust have been implemented.
Released yesterday, the NAO survey went on to say that at least 60 per cent of organisations, including developers, had taken up fewer than half of the recommendations made by the trust.
The Carbon Trust was set up in 2001 with £103 million of public money, with a remit to reduce emissions and, according to the NAO, managed to reduce carbon dioxide emissions from both public and private organisations by an estimated two million tonnes in 2006-07.
However, the audit office admitted there was still work to be done – a feeling echoed by Yeang.
Yeang said: ‘We must secure commitment at the highest level in order to make our cities green, or this millennium will be our last.
'The greening of buildings is one thing, but it is the greening of businesses where we can be really effective in influencing climate change.’
He added: ‘To meet the government's target of carbon reduction of 118 million tonnes by 2010, government must send a clear message to business about where to get assistance and how to achieve significant, large-scale changes especially in the property sector, which currently accounts for around 40 per cent of carbon emissions in the UK.
'Businesses... need to implement the changes that are recommended by the trust. Less than 40 per cent of the possible carbon savings recently identified by the trust have been achieved.'