I have a BTHub4 just installed.
My wife's laptop has to have the security code entered every time she switches on the laptop
Also the same thing happens on our wifi radio.
When we had a Sky router this never happened.
Also in passing as you might say my IP camera used to have an URL given to it that I could use to operate the camera ie:192.168.1.xx this does not happen. At the moment I am not at all happy with the BTHub4
Depending on how your camera is set up you will probably need to change settings for it to work with the new router.
Did some more checking with other devices. My mobile phone, (Win 8.1) My wife's mobile phone (android) and a android tablet all connect to the BTHub4 and remember the WPA key when switched off and switched back on later.
Both the internet radio and the laptop still refuse to remember the log in details.
On the Laptop connect to the Homehub as per normal using the wireless passkey from the Homehub.
Once connected click on the wireless icon at the bottom right of your desktop then click on Open network and sharing centre.
On left hand side click on Manage Wireless Networks. Select your Homehub make sure it is at the top of the list of connections. If it isn't, move it up the list.
Double click on the Homehub connection and check that the box "Connect automatically when in range" is ticked. Click OK.
Just checked on your suggestion but it was all ready setup as per your instructions. The original hub was listed so I removed it.