Double check all your cabling is snug and tight with no kinks, especially the white coaxial cable.
Check the channels shown in the screenshot below. They are all carried on the same Mux (it's like the method used by Freeview to group their channels together)
If they are in your current package and showing the same symptons then it looks like a signal error and you will need to speak to faults.
Call 150 from a Virgin landline/mobile, or 0345 454 1111, option 2 (Faults)
When calling Faults you will hear the automated response asking you to press 1 for the link to online support etc, ignore all the options and don't press any buttons then you should be placed into a queue and an agent should pick up the phone and resolve the problem.
Or wait a couple of days for a member of the forum team to pick this up for you.
