Just got a couple of decent ones in Cargo here in Oxfordshire - half price at under £2 each. They are not super trendy, but are the right shape. Am happy to collect and mail some if anyone is interested.
I've just ordered a couple of these myself http://www.anothercoffee.co.uk/products/item202101.aspx I had seen some nice Denby ones in Debenhams but they weren't the cheapest, if the ones I ordered are no good I may go back and get them though...