(BBCNews) - People investing money in fine wine have lost an estimated £100m over the last four years following the collapse of wine investment firms, the BBC has learned. It is thought more than 50 UK-based vintage wine investment firms have collapsed in that period. Some individuals speaking to Radio 4's Money Box say they have lost over £100,000 after investments went sour. Liquidators say they have uncovered examples of "colossal" mismanagement. Sarah, not her real name, lives in the East Midlands and is in her fifties. Her husband died 10 years ago and her inheritance meant she had money to invest.