Seeking Samsung Galaxy S or iPhone 3g .

My handbag was stolen this weekend so, need to find a replacement phone ASAP. Looking for unlocked or locked to 3 network Samsung Galaxy S or iPhone 3G - in decent condition and working order. Can meet n central London, preferably somewhere safe and open - like a train station. Also Greenwich circa Cutty Sark works for me. Happy to pay cash. If you have photos of phone I would love to see it. Thanks!