What is your system time? If it's not British time you're somewhere else.
What is your actual IP? Where is that IP based?
dig TXT +short o-o.myaddr.l.google.com @ns1.google.com | sed 's/"//g'
What is the return-time between a ping (or similar) from the BBC to you and back? If it's over a certain number of microseconds, you're 'no longer in Kansas, Toto'.