By Andrew Porter, Political Editor
Hilary Benn, the Environment Secretary, is to declare that Britain has warmed significantly in the past 30 years and violent storms are a regular occurrence.He will unveil a report showing that the annual average temperature in central England has risen by about 1ºC since the 1970s.
It will also show that 2006 was the warmest year of the past three decades and that average sea surface temperatures around Britain have risen by 0.7ºC over the same period.
Violent "windstorms" have become more common in the past 20 years, but the level is only as high as it was at the beginning of the last century.
Mr Benn will say that Britain has broken the link between economic growth and greenhouse gas emissions.