All done but also had no idea of the two trees in 18. Still can’t see “what’s hard in 10” so looking forward to my groan of appreciation. And I can’t see how 4 fits together though I am sure of the answer.
I was held up by having the wrong answer at 22a. My answer fitted the definition, but I couldn't parse it. Never heard of the correct answer, but at least it does parse!
Hi Neville.
20d def is face. Parses as 2,4.
Insert the 1letter for ‘hard’ to give you the 2 (in Roman).
24 is a cryptic def which you should get once you have 20d.