Re: A balance must be struck
Yes, and as you suggest the balance is in part between private and government crime. In the USA, it's known that government departments -- notably the CIA, but surely others -- have broken and continue to break national and international laws against torture, assassination, and bribery. Among other malfeasance.
The question for Brits may be, how much latitude does the GCHQ get to commit criminal acts in an effort to prevent criminal acts?