"… one does not, in my view, look behind the record and enquire what particular facts were relevant to proving the fulfilment of necessary condition in this particular case. One looks only at the condition itself. There are many ways in which in general it is possible to prove that other men are on strike. The finding that other men were on strike in this case was largely, if not wholly, based on what Mr Nissar said to Mr Khan; but in another case it might have been based on some quite different evidence. That by the test of Diplock LJ [that is a reference to Thoday v Thoday ] does not result in an issue estoppel as to what Mr Nissar said to Mr Khan."
"I am not entitled then to go behind the record and use the particular facts which were found and apply them to a different question, should the rejection of the original claim be reviewed and set aside. Although Mr Duncan made findings of fact about one aspect of the case he was considering, it was in relation only to one of the circumstances which he had to take into account."
"A party to civil proceedings is not entitled to make, as against the other party, an assertion, whether of fact or of the legal consequences of facts, the correctness of which is an essential element in his cause of action or defence, if the same assertion was an essential element in his previous cause of action or defence in previous civil proceedings between the same parties or their predecessors in title and was found by a court of competent jurisdiction in such previous civil proceedings to be incorrect, unless further material which is relevant to the correctness or incorrectness of the assertion and could not by reasonable diligence have been adduced by that party in the previous proceedings has since become available to him."