Thanks David, I would love to know what the configuration changes were but I guess you aren't going to be allowed to tell us. However, my problem site is now working fine.
It seems like google search is now working for me! I'll see later whether this has fixed my Teamspeak and League of Legends problems.
Thank you. I did suddenly manage to access my BT mail. So whatever you did helped me!
Everything seems back to normal here as well.
Thank you 🙂