Haha.
I successfully made up the brackets for the spot handbrake calliper. Fitted them and attached the callipers.
Next job was to have a look at the handbrake cable routing and see how to get them to the front of the disc rather than the rear.I found that the cables come around the engine on the nearside and are fixed to the rear firewall with small bolts before exiting at the rear of the hubs.
I undid the fixings and it was a relatively easy job to reroute the cables to meet up with the spot callipers. The L-shaped fixing brackets from the original setup can be attached to the spot callipers with a little adaption.
So I fixed the cables and adjusted them at the other end. Tested them and
I have a handbrake again.
So just refit the rear wheels and the job's complete...
EXCEPT...
that the levers on the spot callipers foul on the inner surface of the wheel!
I did a real Victor Meldrew!
Levers are now with a local engineering firm to reduce by 10mm. Doh!