It depends what you were told when you gave your information. Under the DP act you cannot use data beyond the reason that it was collected for. If you were told 'give us your name and address, we'll use it to send you information about promotional events and to contact you in case of emergency' they cannot make it public. Any emails that go out to all members should be sent 'bcc' (Blind carbon copy) so recipients cannot see the full list. If the club is storing data then they are bound by the DP act whether they think they are or not. They should also have a data protection and confidentiality policy.
http://www.dur.ac.uk/...ection/dp_principles/