Having a bit of a bad run getting stuff to let go. I've had to order more decent dremel discs as the thin ones aren't up to the job so moved onto the bits left at the front. Everything is rusted up - getting to the stage where (after a quick check of the suppliers price lists - I am from Yorkshire) I'm having to resort to more cutting. The pipe from the brake reservoir to the cylinder was rusty at both ends and the middle, and the nut at the master cylinder would not yield, so cut the pipe off at the bottom so I can get a ring spanner or socket on it later. Would have needed replacing anyway, and less than a tenner. Hoorah!
Onto the Handbrake pivot bolt. The bolt head does turn a little, but is fused to the pivot, so will only move a little.
PlusGas sprayed liberally and hit bolt and pivot bar with hammer to try and shock them free of each other without success so far. Keep reminding myself that stuff is 50 years old, and has sat for 20, so is to be expected. Still frustrating.