A group representing some of the world’s largest institutional investors has written to the UK Prime Minister and urged him to ensure the G20 governments address climate change when they meet in London today, as asset managers and investors become ever more conscious of environmental issues.

In a letter to Gordon Brown on the eve of the summit, the heads of 10 fund managers and pension schemes, including F&C Asset Management and the London Pension Fund Authority, appealed to the chairman of the G20 to persuade governments to include a green element to discussions.