Thanks all.
I went out and had it apart again.
The handbrake cable seems to be free. Probably quite old but the issue I had (before I started this nonsense) was that I needed to pull the handbrake almost vertical to get a grip. The drums seems perfectly free when it’s off and are well on when it’s pulled.
I tried the mallet, pump brakes, turn process for a while the. Put the wheel back on. Me giving it a good spin causes it to spin for about half a revolution before it stops. Still pretty well catching.
I’ll take it to the garage. Tail between my legs.
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