Virgin media will pay him a visit quite soon if he's not taking the right precautions.
And just tell him to turn it down, why be a snitch? :P
Or you could just give him empty threats.. 'you gona turn that f*cking **** down or do you want me to give virgin a call?'
and for your information.. they have a fraud line (virgin media) .. where they request grassers to ring up and report people for not being a indebted slave.