Jumbo crossword No 4

Jumbo Potaroo always means jumbo amounts of fun! Thanks for the puzzle. Dazzling clues with 10d and 23d as my faves!

All good fun, as if I'd have ever thought otherwise - a little tricksy in places, I'd say, but nothing to be afraid of! The big tick count went up to a nice, round ten: 17a (LOI, 'cause I had to drag it out the memory banks), 21a, 40a, 45a, 54a, 4d (lovely def!), 6d (likewise!), 10d, 46d ("naturally" made me smile) and 47d. Thanks for the puzzle, you two, and it's good to see that Liari got her lucky number fourth slot after all!