I've completed the crossword but uncertain about the wordplay on final clue:
15d Box at Lord's perhaps for Jack Hill (9)
I have P?O?E?T?R and reckon the answer is PROTECTOR which could be a box used by cricketers at Lord's. But why Jack Hill? There was an Australian international of that name in the 1950's, but I can't see the relevance of that.
Another word that fits the pattern is Projector, but I don't think that's an option.
Has anybody any words of wisdom to throw at this?