If you don't mind second-hand, I'll have a look in the garage. They were replaced after my cambelt lost a couple of teeth, and I replaced all 16 valves regardless. This means they may not be 100% true, and probably not much help. But I could post them to you and let you decide.

Alternatively, Andyescos off here was selling a complete set of valves and guides at rock bottom price.

Look here https://passionford.com/forum/viewtopic.php?t=163057

His last comment on 15th Jan was "sod it, Valves and guides, £250". Might be gone by now - worth a try ?