Wow! That was fun. A couple of pointers from present company, but mostly my own work.
FOI before I got out of bed 7a, would have pointed me at the theme very efficiently if I'd got the anagram right, wasted a few minutes looking for more cats until I spotted a missing v and checked 7 again(!). Completed the southern half this morning (not as a plan, I just got those and couldn't see the northern ones), then a long break for other activity before returning this evening.
LOI 17a, unusually weak I think (surely both c and v give valid if unusual names?)
COD 12a just gets it over 51a but many other contenders.
Quick note on the parsing of 48a: I don't think anyone's mentioned the hold in the clue which was a big pointer to me (although I'm even less interested in wrestling than cricket!)
Thanks a lot Maskarade, a great puzzle -not up to the best of Araucaria's holiday specials (what could be?) but well deserving comparison.
And of course thanks to all here for the hints and the company. Happy Easter to all, keep safe.