Does anyone has idea, other than openreach, which all carrier service providers has their exchanges - like VirginMedia, City fibre , Talk talk, Gigaclear, Hyperoptic - Does they have their own separate telephone exchanges .
Telephone exchange might be the wrong word here as that's more of a BT / Openreach thing. When you're talking about what comes before the nodal / distribution cabinets in Virgin Media's network then you're talking about a datacentre. It's a similar story for Cityfibre etc.