The plus side is that now my drivers seat sits firm against the rear bulkhead. Plus I have gained the ability adjust the recline of the seat.
VERY GOOD FOR THE TALLER DRIVER!
In simple terms I've removed the part of the seat subframe that allows the seat to be move backward and forward. In its place I have 2 x aluminium bars that the seat now mounts to. The steel angles that are attached directly to the seat remain. The angle of recline is determined by the number of spacing washers fitted between the aluminium bars and the std steel angle that are attached to the seat.
First the std sub frame is removed from the seat (and car)
Next the bars are fitted to the chassis, see below...

Next off space the seat so it is not sitting on the floor. I used around 40 m/m of washers. At this point you can use the balance of washers to adjust the recline of the seat.
Below are dimensions of replacement subframe bars.

I have lots of other photo's, anyone requiring more info is welcome to PM me. Anyone living near Derby is welcome to come and have a look for themselves.
Paul