This may be of use to know if you are desperate for a Unicorn Fingerling but it'll be a bit faffy to buy
Theyre in stock in Toys R Us France, here;
www.toysrus.fr/product/index.jsp?prodFindSrc=cart&productId=99721591
But they only deliver to France/Monaco etc so they will accept a UK payment address but you would have to use a parcel forwarding service or have a friend in France to help you get it sent on to the UK.
Probably not the cheapest solution but at least its 100% not a fake.