Last one. 5d Dull fellow with tree that's queen underground (10) ?R?S?R?I?E. I can only find PRESERVICE or PRESURMISE. Service is a tree, but preservice is not in my Chambers, though it is an American word. I have RELICS for 17a, anagram of slicer.
This crossword is driving me nuts. Please what is the answer to 11,23
Funny business with a cheeseboard:".............................., Would he have 20 22 across?" (2).