@Cheryljo89
The crude method is to change the WiFi password and then only give the devices you wish to connect the new one.
The Parental Controls of the WiFi Max subscription supplement is a fine-grain approach.
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Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
