@Grahamto pretty unusual unless your semi has solid internal walls which will inevitably reduce the WiFi signal in other rooms. Make sure the hub is on a surface in the open as things like radiators can block the signal completly. Beyond that talk to Sky about getting an extender but if your home is seriously WiFi unfriendly which some properties especially those built over a 100 years ago can be you are going to have to consider other technology. Running ethernet cables to areas without usable WiFi or using technology like powerline networking are possibilities
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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
