I have just had a new kitchen fitted and wanted a free standing slimline dishwasher but the kitchen fitter has only left 840mm from the floor to worktop. John Lewis suggested I take off the top from the dishwasher so it will fit under - is this ok? If so, any ideas on the best dishwasher to do this? Alternatively does anyone know of a slimline dishwasher that isn't 850mm high?