Thank you I found all of this info already it hasn't really answered my question as all of this info is readily available on the internet.
I wanted more of a comparison between the two forms of organisation e.g.:
Charity you can earn this much but you have to pay tax on X
CASC you can earn this much but you have to pay tax on Y
Rates or exemptions that are applicable given the activities listed:
Room Hire - non related events
Bar sales for non related events
Bar sales for fund raising events
Snack bar sales for football events
and also the benefits of being a CASC over a charity
That's the information I am looking for. Can you help?