Thanks Ben. At the moment I'm waiting for some roof bars so I can flip it on it's roof as the boot floor is not sitting right as yet.
The car is now on roof bars and upside down. The temporary check fit of the rear subframe is much better now. I still have another problem. When you fit the boot floor the rear seat section does not align itself to the spot weld position on the side of the rear bins. I have to force both sides up (or down in my inverted case) about half an inch to re-estblish the original postition of the old boot floor seat pan. Is this normal as I see the restriction being the over and under of the heel board and rear seatback/firewall/bulkhead?