That's not a new thing - back when she became queen there was a spate of pillar-box bombings up in Scotland, because the pillar-boxes had QE II on them instead of QE. I seem to remember there was a fella who called he'd posted a winning football pools coupon,but it got blown up.

In fact England and Wales are the only countries where there'd be any logic in calling her Queen Elizabeth II anyway, since all the other countries where she's theoretically queen never had the first one. Surely noone outside England and Wales actually calls her Queen Elizabeth the Second do they?