Thanks Brendan. Very helpful.
Also figured out the Munro in 19a - new to me (as was the humorous writer in 28a)
I agree that 11a is a great surface.
Pity there weren't more anagrams but plenty of fair clueing and most were gettable with nothing too obscure, though learned a few new words along the way (eg 'boozer' in 3 down)