@Stuarthunter fortunately you should be able to control your heating without the Hive system being online. Wifi range depends on the layout and type of construction of your home so you may need additional wifi kit to get coverage in areas away from the hub. Sky will sell you their WiFi Max add-on which can supply up to 3 extenders if required see https://www.sky.com/help/articles/sky-wifi-max or you can buy and use your own equipment.
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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
