I suck at cooking, but I'm pretty sure we have entirely different varieties of potato here in the UK. I think you can get russets in some places... not sure. We usually have Pembrokeshire spuds, or the imaginaitvely named 'new potatoes' but there's also Charlottes, King Edwards, Jersey Royals... lots of tattys! Lol (Course, some places just sell 'red' or 'white' - which is pretty straight forward!)