As usual it is because it's been sitting. I took the rear drums off (what a joy and simple!), the lower pistons on the new looking cylinders were a little sticky, a gentle move and they were all good.
We bled the brakes again, FL, FR, RR, RL with a nice tap along the lines. Now the pedal is much firmer and the car stops well.
Still a little pull left which I believe will be the left being set a little sharper, which we can back off in due course, but very manageable, and I'll let it settle.
Handbrake (these are not a great design) took some tweaking, but no things feel better.
I went to replace the solenoid, and the one I fitted would start and not stop! Same wiring etc, the seller is sender me another. I can't see how if they are visually identical that it would be different, most likely be a bad one!
Feel like I'm getting there now!