slj,
Thanks for the link on judicial enquiries.
From this I see that a:
"Judicial review allows people with a sufficient interest in a decision or action by a public body to ask a judge to review the lawfulness of:
an enactment; or
a decision, action or failure to act in relation to the exercise of a public function"
So a judge will review the evidence and make a judgement.
The HoL Select Committee, comprising a majority of judges, reviewed the evidence and made a judgement which the MoD reject.
Yes I can now see the clear difference between the two procedures