The DNS for the domains seem to be set up incorrectly. The correct way is to do two things:
Your site will then be accesible properly at that domain, once the DNS settings have propagated through the Internet to the Voice server.
Of the domains you mention:
www.swlen.org.uk and www.richmondsparrows.org.uk
These resolve to 82.165.33.200, and then something that responds there sends a 302 "redirect" HTTP response to the site on Voice.
www.hamunitedgroup.org.uk and www.forg.org.uk
These also resolve to 82.165.33.200, but the server creates a frame and inserts the Voice site into it. Yuck.
Hope this helps!
Thanks
Joe - Voice Admin