You know your limitations when you can't see the wordplay for an answer that has been given in more time than it takes for some to finish the whole crossword.
24a Ham players paid to start filming instead, entertaining one. Ans is prosciutto (=ham).
Pros =players. entertaining one must mean insert i -but can't see how I get c ut to out of "paid to start filming instead"
players who are paid are pros so that takes care of that bit - i think the 'i' is inserted in the phrase 'cut to' which is a script direction that cuts to a scene - still not 100% happy with that though.