Thanks again for input from all.
Damaged horn. Kept a good eye on the horn and have removed it with hoof shears without any issue at all. Caught him yesterday and it was only on by a small section of horn. Much less stressful now he's not covered in fresh blood!
The number of historic forum posts here and elsewhere about damaged horns ripping of sections skull and exposing soft tissue etc was somewhat horrifying!!
Bad feet. Have had a good look at her twice since my first post. She walks soundly and, despite the issue of escaping last time is placid and easily handled.
She was the last but one for me to deal with on that occasion and I think my general incompetence had taken its toll on her calm nature. She escaped under a bit of loose fencing which I've since fixed. I had also left too much space for them so she was able to get a run up!!
All lessons learnt in my usual fashion - begin incompetent and learn fast!

Next lesson is with feet bathing.

I have set up four 1 litre plastic milk bottles with elasticated cord joining the handless set up so I can tension over the sheep's back. I've worked out how to set up a very restricted crush so she will be hard pressed to move. The plan is to fit the thing on her and then add Golden Hoof to the bottles.

Thanks again.