Why is the law system so weak in the uk this man was jailed only 24 years for this?

Unfortunately, the Uk does not condone the death penalty for some odd reason! but 24 years..you don't know how the system works do you?...Alot of people who do acts like this never and I mean never get away. Let me tell you what happens..The sentence is 24 years, after this period he is put infront of court for a second decision relating to his actual release..he can be placed in jail for an additional 24 yrs. See the courts are smart and the public does not know of the complications during a case. Sometimes if the court imposes a high sentence some jack human rights lawyer (for publicity) challenges the decision and when this happens the criminal has a second chance of escaping liability. There are always lawyers waiting to challenge high profile cases such as this only to help their own reputation. So what the court does they give a reasonable sentence only to avoid a harsher judgment being challenged by some wise *** lawyer to allow the criminal to serve time..then at the end of the 24yrs by that time the case is cold...the criminal has to face another court decision either to extend the time or release...so guess what happens an additional 24 yrs is added..so the harsh judgment is given but over time....plus these men in case you dont know how prisons work...the judge puts them in general population and the other inamtes deals with them effectively...trust me it happens always..dont think he got away...its only a false image to avoid unwanted attention