Have been to dvla today, it is form V627/1 that is required, I have to fill it out send it back and they will contact me to arrange inspection.
I agree with the comments regarding Insurance and being honest with them, but the registration and insurance are seperate, once registered as a Sammio, that's the name of the car. If you then tell the insurance company you have a modified Sammio then they would insure it as such. Exactly the same as if you had a Mondeo then modified it, if you told the insurance company of the modifications and paid the higher premium there should be no issues!
Sorry for opening up a can of worms!
