I can recommend the PolarCell mentioned in the first post.
ebay link: http://www.ebay.co.uk/itm/PolarCell-...item5ae5cc9046

More importantly, I can REALLY recommend the seller, Wannsee-Electronic (http://stores.ebay.co.uk/wannseeelectronic). My battery arrived severely dented and bent, as if the postal services ran a truck over it. One message and a few pictures of the battery later, and a replacement was shipped.

They also ship very fast. If you want to buy a PolarCell battery from a trustworthy place, buy from them.