Hundreds of Welsh mobile home tenants believe they are being ripped off by site owners charging excessive admin fees for gas and electricity.Welsh Assembly member Peter Black has highlighted the problem after researching mobile homes for a Proposed Members' Bill.Mr Black discovered that on most sites mobile homes are not separately metered and site operators apportion bills and pass on charges to residents, with admin charges being added in some cases.On one site, residents were charged 20% VAT d...