I decided to make up my own rack. Its an odd lloking beast but here it and why.
The rack....
And installed...
From the back....notice the tail sticks throgh the rack...heres why.

And also this...

And it also seves another function. To give the panniers some support in the event of a crash, hence the odd looking loop underneath the rack with rubber stoppers to stop rattling etc.
I crashed when fully loaded some time ago and bent one in a bit.
Oh, and I fitted one of these too..
Marvellous things these cable ties.