“It is noted that in the terms of the Applicant’s lease [sic] that there is no reference to ‘Estate’ only to the “Demised Premises” and “Building” the latter comprising 173 to 193 Campbell Road. The Fifth Schedule of the lease provides an explanation of The Service Charge which concerns only the expenditure in relation to the Building (and the Common Parts) and the Demised Premises. It does not refer to any wider area such as the “Estate” as claimed by the Respondent, as clause 5(5) of the lease also only expressly refers only to the Building, the Demised Premises and the Common Parts. Consequently, the Tribunal are of the opinion that it cannot be right that the Applicants are liable to a contribution towards the upkeep of the Estate as sought by the Respondent and those sums so specifically claimed are disallowed in their entirety.”
'Cause of action estoppel arises where the cause of action in the latter proceedings is identical to that in the earlier proceedings, the latter having been between the same parties or their privies and having involved the same subject matter. In such a case the bar is absolute in relation to all points decided unless fraud or collusion is alleged, such as to justify setting aside the earlier judgment. The discovery of new factual matter which could not have been found out by reasonable diligence for use in the earlier proceedings does not, according to the law of England, permit the latter to be reopened ... Issue estoppel may arise where a particular issue forming a necessary ingredient in a cause of action has been litigated and decided and in subsequent proceedings between the same parties involving a different cause of action to which the same issue is relevant one of the parties seeks to reopen that issue.' ([1991] 3 All ER 41 at 46, 47,[1991] 2 AC 93 at 104, 105.) The case before the committee was treated as one of issue estoppel, because the cause of action was concerned with a different rent review from the one considered by Walton J. But it is important to appreciate that the critical distinction in the Arnold case was not between issue estoppel and cause of action estoppel, but between a case where the relevant point had been considered and decided in the earlier occasion and a case where it had not been considered and decided but arguably should have been. The tenant in the Arnold case had not failed to bring his whole case forward before Walton J. On the contrary, he had argued the very point which he now wished to reopen and had lost. It was not therefore a Henderson v Henderson case. 12 The real issue was whether the flexibility in the doctrine of res judicata which was implicit in Wigram V-C's statement extended to an attempt to reopen the very same point in materially altered circumstances. Lord Keith of Kinkel, with whom the rest of the Committee agreed, held that it did. [21] Lord Keith first considered the principle stated by Wigram V-C that res judicata extended to-- 'every point which properly belonged to the subject of litigation and which the parties exercising reasonable diligence might have brought forward at the time.'
'... there is room for the view that the underlying principles upon which estoppel is based, public policy and justice, have greater force in cause of action estoppel, the subject matter of the two proceedings being identical, than they do in issue estoppel, where the subject matter is different.' ([1991] 3 All ER 41 at 50,[1991] 2 AC 93 at 108.) The relevant difference between the two was that in the case of cause of action estoppel it was in principle possible to challenge the previous decision as to the existence or non-existence of the cause of action by taking a new point which could not reasonably have been taken on the earlier occasion; whereas in the case of issue estoppel it was in principle possible to challenge the previous decision on the relevant issue not just by taking a new point which could not reasonably have been taken on the earlier occasion but to reargue in materially altered circumstances an old point which had previously been rejected. He formulated the latter exception[1991] 3 All ER 41 at 50,[1991] 2 AC 93 at 109 as follows: '
'To put it no higher, there is a very substantial chance that if the rent review clause in this sub-underlease were not to be construed in the light of the Court of Appeal decision, the opposite result would be achieved.'