Meursault, your warning might save some solvers with older editions a bit of agonising. My fourth edition of the Concise ODQ (2003) is correct.
I have a query about 35d. I have never seen L clued as 'long' before. It's not in Chambers, nor in the other main reference, Oxford. 'Small' for S and 'large' for L are also not used in the Listener because Chambers, rather oddly, has never included them.
On top of that, the clue seems to be grammatically faulty because it's a clue to EPL. 'X before Y is up' can only be sensibly read as [X before Y} is up (reversed). To mean LEP the main verb, 'is' needs to be omitted, giving the equivalent of 'L before Y reversed.'