@Ra26 if ghe hub definitely cannot be moved you will need a wifi extender which should be placed halfway between the hub and your room.it is best to get one mateched to your hubto avoid interference and mobiledevices having to connect to a second network. Sky will sell you a package called Sky WiFi Max which can supply extenders if requires see https://www.sky.com/help/articles/sky-wifi-max
The alternative is to buy your own equipment and use that instead of the Skyhub's wifi. If it is only one room an alternativecis to buy a Powerline Netwrking kit that uses your home's mains wiring to carry the signal. The adapters can be bought with built-in wifi access points as well as ethernet ports.
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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
