Well done Ded for taking the time rep on it's way.
Although they say
Decisions on whether or not to prosecute specific individuals are a matter for Immigration Enforcement (previously UKBA) and the Crown Prosecution Service.
it doesn't answer the question as to why the EE Brides are never charged as this really bugs me.
There's no doubting that they are having quite a bit of success with these sham marriages but why let one of the guilty parties off scot free