As the CPS says in the forward to its guidance on prosecutions for corruption;
Bribery and corruption are extremely serious offences, which strike at the heart of public confidence in administrative and judicial affairs. This factor alone will weigh heavily when considering the public interest in prosecuting and a prosecution will be expected unless exceptional factors apply.Fine. Yes. Agree. So why isn't the CPS jailing scores of senior mandarins, generals, chief constables and NHS bosses for this rampant and naked corruption? Well, you won't be surprised to learn that most prosecutions for corruption can only be authorised by the Attorney General in person - and you can be sure he is strongly weighted to blocking any action against his peers. In 1916 the law was even changed to make prosecution for corruption of a public servant simple, without the burden of the Crown having to prove corrupt intent. Again you won't be surprised to learn that "The Government has indicated that this law will be repealed when the law is reformed." Ho yes of course; some senior mandarin jealous of his Wimbledon tickets from Crapita will have seen to that.
Not only are the bastards riddled with corruption, they've even rigged the law to prevent their own prosecution. And we thought Berlusconi was the corrupt one.