Re: British spelling returns?
Both forms are ok for Brits. It's a long running argument although the tide in recent decades does seem to be more towards -ise for British publications.
More worryingly (for me), that page also tells me I've been incorrectly spelling routeing without an e! Oh well. Back to shouting at youngsters who say they are off to the ATM, getting a take out and then going home to binge watch a season of some tv show..