@Techless0ne given it is not allowed to share a domestic Sky broadband connection this either a business installation or your landlord is on the fiddle. You can protect your devices by installing an Internet security suite on each one there is nothing you can do at a network level.. Treat the connection as public WiFi connection and possibly use a VPN for anything like banking you will have to
If it is a business account then the routers are different but the general rules still apply.
=========================================================
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
