(1) A decision under this Act--
(a) is final and conclusive; and
(b) can not be challenged, appealed against, reviewed, quashed, set aside or called in question in any other way, under the Judicial Review Act 1991 or otherwise (whether by the Supreme Court, another court, a tribunal or another entity); and
(c) is not subject to any writ or order of the Supreme Court, another court, a tribunal or another entity on any ground.
(2) In this section--
decision includes a decision or conduct leading up to or forming part of the process of making a decision.