Recently it's been announced that the price for a WoW subscription has increased for those paying in pounds (namely, residents of the United Kingdom). These prices are adjusted for all levels - recurring subscriptions will be £9.99 for 30 days, £28.17 for 90 days, and £52.14 for 180 days. In addition, the price of the 60-day prepaid time card will be £20.99.
Now, if you're currently a subscriber to World of Warcraft in the UK, there is a way around this - namely, stay subscribed.
I get why players are upset about this, especially since it means that if you decide to do what a lot of us do and drop your sub for a few months when there's no content, you'll be resubbing at the higher rate. I would find that a bummer, personally.