My last one is proving impossible:
14D Bird climbing a mountain to circle a tropical tree (5,4). I have T?N?E/ ?E?N. I assume the second word is based on the Scottish mountain but I've never heard of such a tropical tree! Any strong hints very welcome.
Hi again cymro
Could you give hints for parsing
21a third word
2d
20d (King George seems to make more sense than King Arthur, though that would make the "ends" superfluous)
And, talking about superfluous, what does the "No comment" contribute to 6a?