Be careful with 2 pin adapters, there are "Southern Europe" and Northern Europe" types, both are 2 pin, but both are slightly different widths. As vagabond found out, if you have the wrong one it won't fit.
Go to boots, they do a multi adaptor set for about £6 and it includes both.
Don't forget to check your appliance works on the local voltage too though, Kernow's link is a good place to check. If it's a different voltage you can fry a laptop quite quickly.
(EDIT: Just checked, they're on 220V so that'll be ok).