On the whole this was easy, but I found some clues difficult. I finally gave up and came to this forum for help with 4 clues to do. I was surprised to read mentions of a theme, because I hadn't noticed one, so I looked again at all the clues I had solved, and still couldn't see it. In fact I saw the theme only immediately after I filled in my LOI (26d) which is amazing, and even a little embarrasing, because I spent decades teaching mathematics and statistics. The one thing which I still haven't figured out, and for which help would be welcome, is "Perhaps 4 or 6" for 1d. I'm confident I've got the right answer, because it fits the rest of the clue and also has the cricketing connection that someone mentioned, but I just don't get the reference to 4 or 6. Am I stupidly missing something blindingly obvious, as I did with the theme? FOI 8a, COD 6d, as I liked the double reading of the clue.