Firstly, get yourself a proper news reader.
Do a google search, try a few to see which is best.
Google groups through a web browser is absolute rubbish.
Once you have found proper news software, subscribe to a proper news
server. Google groups is absolute rubbish.
Then, you'll see this, and other groups with virtually no spam at all.
Read up about newsgroups in general, especially the uk groups which are
run quite well. There is no moderator for this group.