The standard immobiliser is a Sterling Excel, made by Scorpion Automotive and is Thatcham Cat 2. The immobiliser plug into the loom is an AMP Multilock 070 item. As Chris99 says, I would try Gott & Wynne insurance as they are usually the best rate and don't insist on an immobiliser. I have never heard of a M3W being taken, they are just too conspicuous.
