By Danielle Kate Wroe Offering tradespeople a brew when they’re doing work for you is pretty common practice – but one woman believes that letting them use your loo is one step too far, in case they ruin her throne. Emma Parsons, 63, had hired a tradesman to put up a fence in her back garden, but when he asked whether he could use her loo, she told him that he couldn’t. While a stranger in your bathroom may set you on edge for a couple of minutes, most people would just cringe their way through it – but Emma didn’t feel that she could, and she didn’t want him messing up her lovely loo. Instead…