Just a little update.
Got a flip key case (empty) of ebay for £9.99, got it 2 days after I ordered.
The PCB (circuit board) inside my fob was of cause to big...
BUT, I took some sand paper (100 grit) and started to sand it down on all sides (without damaging the fine metal strips on the circuit board. You need to sand approx 0.5mm on each side and viola IT FITS. You then have to take down the 2 spikes in the new fob because these are longer and fatter then your old ones. this is easily done with a sharp razor blade or knife. For info on how to swap the key blade to your old one, please check youtube tutorials on this. It's easy but to much to go through here.
Removing the transponder IS NOT for the faint hearted, the plastic on your original key is rock hard and you risk cracking the transponder when you try to get it out (if you crack the tranponder IT WILL NOT WORK and you would have to go to a dealer/locksmith to get a new programed for a lot of money).
Luckily I got mine out with out a problem. Fitted perfectly in the new flip key. What I fund out was that every time you remove the batteries in your remote you have to reset it, this is easily done by doing like this:
Put your key in the door lock and open the door manually with your key,
Take the key out and wait 3 sec but no longer than 5 sec,
Now press the "open lock" button on your remote and you will see the lights flick and the red light on your door flash. Now press the "close lock" on your remote straight away and you will see the lights again and the car will lock. You now have a working flip key remote fob to your car.
Will try to get some pictures on the forum if anyone is interested.
Any questions let me know.
Henrik (London, UK)