Originally Posted by
andytug
Sounds like one of your neighbours is also with BT so when you power your hub off the laptop connects to the BT FON part of theirs instead.
There are very few "public wifi" installs outside town centres or public buildings as the cost is very high and the range short , probably why BT went for the hub option.
According to a software wifi signal strength meter on the laptop, the fon signal is almost the same signal strength as my home hub's. I am surrounded by close neighbours and lots of BT home hubs which strongly supports your post. Thank you & BN.
I will report back later after a bit of tinkering.