@Merlin5 Sounds like you have a partial fibre feed so before considering switching to streaming TV you need to find out the speed that line will deliver. That depends on the length of the copper line from the cabinet so isnt something Sky or you can control. You need a minimum of 35Mb/s according to Sky which is a sensible figure. If you already have a broadband connection run a test on Fast.com using a device like a phone connected to the WiFi near your router. Otherwise Sky's online checker should show if they think the service will work but its a bit more of a guess.
Yes you need an Openreach line (that is the BT company that operates the network separately from BT retail) but Sky's price includes the line rental and they will provide a voice line at no extra charge except for any calls you make.
The last consideration is whether you are giing to hit issues with streaming video over WiFi. In a modern open plan home that should be not be an issue but in the older UK home with solid walls a 2 bed cottage can be an absolute pain. Stream works well with a good wifi connection and an absolute pain if it doesnt have one.
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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
