The firm, based in London, notched up a pre-tax profit in £2.2m ($3.3m), up from the £2.5m loss it reported in 2008. Revenues jumped 48% to £33.6m.

“Some political momentum is returning with China and India announcing post-Copenhagen reduction targets in the last few days,” says chairman Richard Sandor.

Annual volume on the European Climate Exchange rose 82% to 5.1 billion tonnes.