In Tesco today I picked up Peppa and George Pig beanies for £2.98 each for my kids. Seems like a good deal.
Unfortunately they don't seem to be available on-line but if you want to see what they're like there are plenty of retailers online selling them (e.g. http://www.4littletots.co.uk/Toys/Peppa-Pig-Soft-Plush-Beanie_339.htm).
I'm not sure how widely available they'll be but I got mine in the South Queensferry (West Lothian) branch.
UPDATE - following on from the posts below they're available at other stores so I assume they should be widely available.