Thanks to all for the advice. The cable was beyond repair so had to be replaced, the offside had virtually no movement due to the outer covering being completely split all round. It was picked up at the last service, oiled and filled with grease but really should have been replaced then.
The replacement cable from Techniques is a much better fit than the original with a much straighter entry into the hub and it appears to have way better outer sheath and protection sleeves.
Started at 9.30, an hour break for lunch and finished at 4.30, that included changing both brake cylinders as well. The gadget for inserting the clips into the rear of the cylinder is a godsend. It's not a difficult job as calypso red said, a lot of the time is spent removing and replacing the interior trim. I also took the opportunity to grease the propshaft while I had the tunnel off.
Here's some pics that might help someone else.
Back tomorrow to change offside caliper as one of the bleed nipples took some thread out on removal, not leaking but I'd rather have it replaced. A big thank you to Michele and Cain at Wolf performance for the excellent service. As usual I have no connection to the aforementioned companies and the value of your investments may go down as well as up.😜
Gordon Duguid 2014 Duratec engine plus 4, Montreal blue.