My 600 started dropping calls, and failing to send txt's etc.. so as per reading on here i replaced the battery and it was fine again. I bought the battery off an Ebay seller (who failed to leave me feedback so i cannot find the guy again as i didnt write down any details).
Anyway.. what must be about 4-5months maximum later and my phone is at it again, so this new pattern part battery is now also dead.

Please where can i buy an OEM battery from in the UK? the store used to sell them didnt they? but now only the 650 seems avaliable i dont want to have to buy these pattern part ones and replace it every few months.