Fit like Maisie quine, and others. As far as giving STRAIGHT answers to Charity Quiz questions is concerned it is not a good idea to do so at the beginning when the quiz has just been newly released because it is known to put people off donating to the charity if they see loads of answers "out there" already. They think it's almost over and they're not going bother making a donation if they think they're not going to have the fun of working it out for themselves. However, if the quiz has been going for a while and is getting near the closing date, surely there's no problem in giving and getting clues after all their hard work. They're often better than the original clues ! Don't let's forget the unpaid hard work of the compiler.
The difference between charity quizzes and newspaper "prize" crosswords (I think) is some newspaper crosswords have thousands of contributors every week - they're commercial organisations-ish and in the case of our/your local paper, many years ago, the subscribers envelopes went into a "falling apart cardboard box under a desk and whatever was on the top was picked out by an office junior".
Cheers
Julie