Good to see I'm not the only Monday finisher. I completed without any help from the forum, but neither of us, both maths graduates, twigged "e" as "base". I was pleased to see other people asking the question I came here to ask, about that.
FOI:19a
LOI: 22 (not a footy fan so didn't get the CP association, had to Google, as I did for the "never heard of it" Leicester ground in 10d)
COD: probably 8a, appreciating the unexpected 4-word definition which could have parsed so differently.
Last week, unusually, I didn't finish despite reading everything in the forum: by Friday night it seemed a bit late to ask for help!