Not sure I am in the right part of the forum.
Anyway I have free BT Wi-fi and it seems to work (connected to next doors) but my hub is not sending out BT Wi-fi and is not set up to do so.
My question is can you make this happen yourself so as you can use BT Wi-fi when out and about but not be part of the system.
I have my own idea how it can be done:
Register for BT Wi-fi and get it working.
Hub may update and broadcast the connection.
Factory reset hub and it may turn off.
The above is a guess because I can't test it but if anyone knows for sure how to do it let me know.