Climate computer under a cloud

The Met Office headquarters has been named as one of Britain’s worst public buildings for pollution – due to a £30 million supercomputer used to predict climate change.

The giant IBM machine fills two special halls the size of two football pitches and is believed to be the second most powerful system in the UK.

It produces 12,000 tonnes of carbon dioxide a year and the Met Office HQ, in Exeter, Devon, was named as one of the worst polluters in a new green league table published by the Department of Communities and Local Government.