No - BT has some major issues.<p><a href="http://downdetector.co.uk/problems/bt-british-telecom/map/" rel="nofollow">http://downdetector.co.uk/problems/bt-british-telecom/map/</a>
I have the same problem here in Oxford. Twitter is down locally as well. Most websites except for google.com, youtube.com, facebook.com are down.<p>Maybe submarine cable is broken or something wrong with the servers.