It's not often I write reviews, but credit where credit is due. I have never used this sort of service before, but having done a Google search, I stumbled across Gadget Panda. Not only were they offering the best price for my old mobile, their website was easy to navigate and within minutes I had completed the online form and was taking my phone to the Post Office. I loved the fact that I got emails with updates and was over the moon to receive my promised money within 2 working days of sending my phone in. Really, really impressed with the service and would highly recomended. Bad points - None!