Initial reports of scams came from America, but it's likely that British scammers or international no-gooders will attempt something similar.
When is iTunes not iTunes?Early reports suggest that there is an iTunes voucher scam doing the rounds. You get a mail saying someone has sent you a $50 iTunes voucher (one month before Christmas and they're sending a gift voucher, yeah, right).
You open the mail, click the Zip file and of course it spreads malware all over your computer.
The reports so far have been about iTunes fraud - these are fake emails, there is no suggestion at all that Apple is doing anything untoward - but it would be a bit of a surprise if the issue were limited to that brand. Watch out for any gift certificates that ask you to click through to a link, they're almost certainly fake - most genuine ones work by giving you a code to enter at the checkout or to add to your account.