Brilliant idea of mine, to remove the central locking from the car, only when I had done this I realised the small issue of not being able to lock the petrol cap (works off the central locking)
I looked on realoem to see if there was the possibility of getting a petrol cap with a key for my car, I struck gold, you can, and it can be matched to your key, so when it arrived it was a simple (30 seconds) to remove the old one and put on the new one, my petrol is secure again.