Guardian: A climate change protester who “slimed” Lord Mandelson said today she had “no regrets” despite receiving a police caution for her actions. Scotland Yard confirmed that Leila Deen attended a central London police station today and accepted the punishment “on the advice of the Crown Prosecution Service”. The 29-year-old, a member of the Plane Stupid campaign group, covered the business secretary in green custard as he left a meeting in the capital last month in a protest against …