Wanted! Apple Iphone 4 +

Hello im looking to buy an Iphone 4 BLACK or WHITE 16GB it has to be in good condition and if possible with box and receipt i can pay upto £250.- thats if the phone is in mint condition unlocked to any network and comes with box. i live in uxbridge West London, and can only meet in WEST london face to face in public, for my and your security. Let me know if you have one for sale you can reply by email or call me on my number,thank you