Images 1, 2 and 4 appear to show a TV aerial connection.
Image 3 shows an Openreach socket and, what looks like possibly, a white shotgun cable for satellite.
None of these will be much use to you.
In image 1 there appears to be some black shotgun cable following the line of the roof and disappearing to the top LHS of the photo. Most likely that is satellite cable of some kind at that height but might be an old VM connection in an unusual location. Too small to see the detail of the cable.
Have you found the cable coming in from the street and traced where that goes to the plastic omnibox outside?
If you can't find the incoming cable/omnibox (because it has been removed) then you have a bigger problem to deal with.
VM's outside wall boxes look like this
https://www.ispreview.co.uk/wp-content/gallery/2019-article-illustrations/virgin_media_external_wall_box.jpg
Colours and styles vary and they may be branded with one of the old cable TV company logos
If you can find the outside cable and wall box, trace the wires inside.
My default cut/paste reply to 'missing wallbox' queries on here is given below. It includes some examples of left-behind installations you might find in a home where VM has been before.
Default reply is ...
Have you checked to make sure there is no other kind of connection? Sometimes there is no wall box, just a trailing cable. The cable could be hidden within, or behind, furniture. Occasionally only a very short stub of wire is left behind often hidden within a blanked-off fitting. A few examples of the kind of things to look for are in the images below from past topics.
https://community.virginmedia.com/t5/QuickStart-set-up-and/Untidy-installation/m-p/5433266#M239199
https://community.virginmedia.com/t5/QuickStart-set-up-and/Reconfigure-my-setup/m-p/5434572#M239308
https://community.virginmedia.com/t5/QuickStart-set-up-and/Diamond-cable-wall-socket/m-p/5430136#M238904
https://community.virginmedia.com/t5/QuickStart-set-up-and/First-installation-and-flashing-green-light/m-p/5434785#M239339
https://community.virginmedia.com/t5/QuickStart-set-up-and/No-wall-socket/td-p/5395897
https://community.virginmedia.com/t5/QuickStart-set-up-and/No-virgin-media-wall-socket/m-p/5395697#M235740
A wall box may be branded with the logos of an old cable TV company (not VM). Past occupiers of your property may have removed the cable and sometimes they are removed by other installers, such as satellite TV techs.
If you have a cable/plug trailing from the wall, you may need a coupler adapter to join two plugs together
https://www.diy.com/departments/slx-coaxial-connector-19mm/5028422001905_BQ.prd
Also available from the likes of Screwfix, Homebase, Toolstation etc.
If you have a plastic omnibox outside on the wall (where the VM cable comes in from the street) see if you can trace any wires from that into your home.
If no luck, call the pre-installation and delivery team on 0800 052 1734 explain the problem and request a tech visit to install a socket.
