@Gemmm speedtest results show the slowest part of the transfer from the sever to your device so if run on a device using WiFi often just tell you the WiFi speed in your home. The only reliable test of the speed to your hub is to use an Ethernet cable.
Slow WiFi is incredibly common but your 45Mb/s is well above the highest speed Sky guarantee even if you buy their Sky WiFi Max bundle https://www.sky.com/help/articles/sky-wifi-max which is 25Mb/s in every room. Work out what speeds you require where and consider how much you are willing to spend in practice around 100Mb/s is ample for most purposes outside major downloads.
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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
