" 
 :Hi Olly, by moderator do you mean administrator?  There all no official requirements needed to become an administrator, however, the Wikipedia community must decide in favor of your request in order to be granted the rights.  Therefore, in order to have a successful request, you must show experience and trustworthiness throughout your edits over a period of time. This period of time has not set length, but more experience is favored over less.  I hope this helps,   "