Paddy O'Dors
Striker
That's what watchdogs are for
It's what regulators are for. Watchdogs are usually retired busybodies with time on their hands.
It's no coincidence that just about every privatisation has had to be accompanied by the introduction of a regulator to protect consumers interests (i.e. stop them getting ripped off). OFWAT, OFGEM, OFCOM off the top of my head. Most of them pretty toothless.