We had rubbish wi-fi, ended up running an outdoor cable around the house and into the dining room to create a wired point for working from home. Then ran a switch to allow both a wifi extender and laptops to run off it. Also used power-line adapters as the tv box needs a wired connection for some reason.
Turns out it’s just the provided router is rubbish (virgin superhub 3).
Got a Netgear Nighthawk a couple of weeks ago as Virgin kindly upgraded us to 500mb broadband and I decided their router couldn’t handle the volume of connected devices.
Turns out I should have done it earlier as the dead-spots in the house are now seeing upwards of 100mb and connectivity is much more stable in general, not to mention having a device which handles modern life better (no need to split wi-fi bands to get stuff to work).
Can get a mesh extender to add to the new router if I need it at any point, but things are going great so far.