Don't know why I didn't think of it before but even Mazuma are offering £295.
To be honest I'm thinking of chopping it it for a Galaxy Nexus. Since getting the Nexus 7 I've been really impressed with Jelly Bean and I can get the phone for a good price. I know it's not a new model but then neither is the 4S. And there's no point me holding out for a 5 or new Nexus because both will be £££ when they arrive.
iOS is great but it's same old, same old. I fancy something else to fiddle with.