in terms of a definitive answer, but here goes.
1. You own the copyright on any original work that is your own creation, and - providing the content isn't in any way illegal - you may publish and/or distribute said work in any way you see fit. The content of a website is classed as an original work in this context.
2. Copyright in images is the propery of the person or people who created them - the photographers. A photographer owns copyright in any images he/she takes, even if they are of individuals, and the photograph was taken without the person's consent. The individual may not prohibit publication or distribution.
3. If you were acting as someone else's agent when you created the site - whether or not you were paid - you might find that your copyright claim isn't valid. The person or organisation for whom you were acting may have a claim to the copyright in the content. Usually such matters are the subject of a preconditional agreement - a web designer might assign the copyright to the site's owner on condition that a fee is paid. If no such fee was payable, but you were acting as a member of the Dramatic society, and designed the site on your own initiative you should be on fairly safe ground - you'll own the copyright, and may publish the site to a server. It's usual in such circumstances to place a discalimer on the homepage, making it clear that the site is 'unofficial'.
4. You must not publish the private email addresses or postal addresses and telephone numbers of individuals without their prior consent - to do so is to invite trouble, although you would not be acting illegally. That would only be the case if you were required to register as a data controller with the Office of the Information Commissioner.
Try to resolve this amicably if you can - it's not worth alienating other people for the sake of a Dramatic society web site.