if you just want two bouquets one for fta sat and then one for all cable then in the abm providers set
Virgin (UK) generate main bouquet to yes (ALL) and generate section bouquets NO
Sky UK generate main bouquet to use (Only FTA) and generate section bouquets NO
press green to save.
Now select Providers order and order sky and virgin in the order you want and press green to save
now start a scan
that will give you two bouquets, 1 for free sat and one for all cable.
Not sure you can have them all in one bouquet unless you use Dsaysers custom mix as mentioned above but then I you will not get channels like itv on cable, just sat.