They sound so ethically correct. They appear to offer a decent return on savings in these troubled times. Yet carbon credits are at the centre of increasingly adventurous scams. And last Tuesday morning, police investigating a suspected fraud network of investment firms selling worthless carbon credits arrested ten men and a woman in co-ordinated raids on offices in the City of London, Essex and Hertfordshire. The raids follow mounting official concern at the scale of carbon credit scams, where investors pay thousands of pounds for overpriced certificates that are said to be linked to environmentally friendly projects such as tree planting. There is virtually no resale market for the certificates and investors typically lose every penny. Financial Mail, which has been investigating the same firms, joined police as they burst into the open-plan headquarters of investment company Hudson Forbes on the third floor of a modern building close to the Tower of London.....Read more here: Police raid City office after Financial Mail warns on carbon credits