No prime fuel pump Ethanol damage

Finally diagnosed my non priming fuel pump, sadly its expired due to ethanol damage, being hygroscopic Ethanol has absorbed some water which has built up in the tank and caused corrosion to the pump motor unit. I have always used premium UK fuels which according to the manuf. are ethanol free, even though they are labeled as MAY contain up to 5% ethanol. So either they are not always ethanol free in the UK or previous owner hasn’t been so careful with the fuel.