OK, I just assumed that a 12V supply would 'cover' a 5V device. That's why I come here...
And, while I'm here, is this all I need?
http://www.ebay.co.uk/itm/Euro-to-UK-Travel-2-Pin-Converter-to-3-Pin-European-Travel-Adapter-Plug-Black-/252960374697?hash=item3ae59cffa9:g:u-YAAOSw8HBZKTIW
Thanks...