A non-reviewable decision—
(a) is final and conclusive; and
(b) is not subject to objection, appeal or review under this part; and
(c) can not be challenged, appealed against, reviewed, quashed, set aside, or called in question in another way, under the Judicial Review Act 1991 or otherwise (whether by the Supreme Court, another court, a tribunal or another entity); and
(d) is not subject to any writ or order of the Supreme Court, another court, a tribunal or another entity on any ground.