I don't see a huge hazard. Canada has mandated multiwire, split receptacles in the kitchen for years and they don't have a huge body count. That is still 240v on a single yoke. If the customes says he thinks the "kettle" is about 1500w the code problem goes away. I seem to recall the Brits use some pretty hefty kettles.
Nobody wants to wait too long for their tea.
Being Italian it may be an expresso machine.
[This message has been edited by gfretwell (edited 01-08-2007).]