Just bought a new remote key from the following on ebay : autoremotedepot Australia .They supply the key and transmitter which you have to get cut and tuned to open/close and power ignition.The cost for the key and fob was £54.76 including postage but when ordering you MUST quote your VIN for the car.They stock thousands of different fobs etc so its a must to quote the VIN.Have'nt got the fob activated or key cut yet will let you know how it goes.If your in the same boat as me with only one fob key then lose that and its curtains.  

Hi

I only have one key too how did you get on ?

Hi. I only had one key with fob and got another key cut last year. Without the fob, when unlocking the door with the key, the alarm goes off.  However once you’ve started the car, the alarm goes off and you can drive away.  Maybe I’m lucky, but no need for a second fob