Well I've had a look at why the one rear handbrake adjustment has stopped functioning (again).
It was pretty obvious what the problem was so I took the broken part out.
Obtained these from Fletcher in Birmingham and
And fitted the spring here. Its obviusly which one it is, it's silver (no brake dust on it).
Manually adjusted it up and made sure that the bits were in the correct places before putting the wheel on. I knew that would excite you.