But, isn't the "LAW" somewhat open to interpretation by the Judge? I have seen a number of cases (in the U.S.) that are almost identical, yet the judges give very different sentences based on "His/Her" interpretation of the applicable law.
Also, isn't it true that sometimes laws are changed when a judge decides to "set precedent" and override the standing law? This then becomes a sort of temporary ruling that can be used in appeals, and if this new ruling stands up, it then becomes "fixed".
That is true, but it is beside the point.
In fact judges do have the ability to decide that a certain law is not applicable to a certain situation, but it does not mean that a particular statute doesn't exist any more merely because a judge decided to not apply it.
In Parliamentary Democracies such as Great Britain (where this case took place), Australia and New Zealand, Laws can only be enacted by Acts of Parliament. Judges cannot make Law they way the do in the US, and even they are restricted by the wording of the US Constitutions and its various amendments.
Fact: Creating a false evidence trail is a criminal offence. There is no possible valid argument to say that it isn't because it is "Common Law" (or what Americans would call
"black letter Law"). In UK, it comes under "Offences against the administration of public justice" and includes such things as...
► Doing an act tending and intended to pervert the course of public justice
► Concealing evidence, contrary to section 5(1) of the Criminal Law Act 1967
► Making a false statutory declaration, contrary to section 5 of the Perjury Act 1911
► Fabrication of false evidence
► Causing a wasteful employment of the police, contrary to section 5(2) of the Criminal Law Act 1967
EDIT:
anglolawyer will have a better Idea, but I would say that last two are probably what the tagger was charged with in addition to the criminal damage charges.