Licence or license? Practice or practise?

Alexander M Zoltai:

As today’s re-blog demonstrates, some spelling rules are “magnificently daft” :-)

Originally posted on Stroppy Editor:

If you’re American, it’s simple: use license and practice and you won’t go wrong.

If you’re British, things are more complicated. Use licence and practice as nouns and license and practise as verbs. The adjectives formed from the verbs also have the s spelling.

Hence this passage from the UK’s General Medical Council:

If you want to continue to hold a licen...