(Just suggesting an alternative) - But perhaps you could source a reflashed ECU out of a crashed car etc... or do someone a swap? I've never trusted piggy-back chips much since we saw the terrible job of soldering done by one company!!
Shipping would prob be your expense in that circumstance though!
[edit]
I've realised now perhaps a UKDM ECU might not be compatible with your car?
[/edit]