@Gemmalou01 hopefully you do not mean a second Sky hub ie network router as you should only ever have one of those units. It would help if you explained exactly what you are trying to do. If it is dimply trying to extend wifi coverage to a distant room the device you need is a booster (an old Sky hub wont work as one) which is fitted halfway between where the hub is and where the extra signal is required.
Sky will provide boosters to customers who buy the Broadband Boost or Sky WiFi Max packages or where Sky Q TV boxes are not connecting. Alternstively you can buy third psrty wifi kit and turn off theSky wifi.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
