Right. An update for any interested.
I’ve managed to get the bearing race off, in the end a plasma cutter was used 😯 (I wasn’t actually there)
The pivot spindle needed a slight wetsand to get all the grime off, but the new bearings went in fine and so I then aligned the swingarm.
Then I tried to put the bearing clamp bolts back in. Unfortunately, one of them, then non-drive side one, as before was weirdly tight, despite me checking the threads of the hole and the bolt. I ended up rounding the head off the bolt about 2mm from the end. 😳 👿 😥
I’m going to reassemble the bike tomorrow and take it for a ride, and hope and pray the clamp is tight enough to grip the bearings properly.
If not, I have no idea what to do 🙁
EDIT: Fatharrywhite : I tried the mole grips and mine are a bit sh*@£y, so they weren’t gripping hard enough.