Every time Fiona Enningham leaves her flat, she unplugs everything apart from her fridge as she is terrified that her building is unsafe and fears there could be a serious accident. The 51-year-old lives in a one-bedroom apartment in Uxbridge, London, that she bought on a shared ownership basis, something she deeply regrets. She is now financially trapped and cannot sell it as it is riddled with safety issues. Even though Fiona only owns a quart…