I'm not sure what's happening there it looks like both Sky UK and virgin media UK are using the same line-up.
Can you go into ABM CustomMix Importer and delete file then press right on each import and delete all then fetch file on dsayers virgin media UK into sky UK.
Set providers to your area HD as I don't import all virgin channels into sky UK so you will have a lot missing plus my hacks in custommix may have issues with hacks in providers file using custom region.
Also have a look here at abu baniaz command to delete all channel data http://www.world-of-satellite.com/sh...Linux-commands
Edit just noticed you have Sky UK generate sections bouquets to no change that to yes if you want to use Sky UK line up.