“there is a principle that even where the cause of action is not the same in the later action as it was in the earlier one, some issue which is necessarily common to both was decided on the earlier occasion and is binding on the parties: Duchess of Kingston’s Case (1776) 20 State Tr 355. ‘Issue estoppel’ was the expression devised to describe this principle by Higgins J in Hoystead v Federal Commissioner of Taxation(1921) 29 CLR 537 , 561 and adopted by Diplock LJ in Thoday v Thoday[1964] P 181 ; 197-198”
‘a party to civil proceedings is not entitled to make, as against the other party, an assertion, whether or 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 be reasonable diligence have been adduced by that party in the previous proceedings has since become available to him.’
“Fact Findings 20. The Tribunal found the following in relation to the issues: a. Did the claimant suffer a mental impairment of stress and anxiety at thetime the claimed discrimination took place (loss of CBT counsellingMarch 2022)? I accept the relevant date is March 2022, from the evidence it shows the claimant to have suffered from anxiety in December 2021, which is not immediately prior, but due to the medical history could say around March 2022 there was stress and anxiety. b. Did this stress and anxiety have a substantial adverse effect on theclaimant’s ability to carry out his day-to-day activities? The report at page 108 by Karl, the CBT therapist and the Occupational Health report from 2022 do not support that suffering from anxiety impacted the claimant’s day-to-day activities. They both say the claimant can return to work which is main impact the claimant argues. At page 127 the statement does state that the claimant cannot get out of bed, has paranoia etc, but none of this is recorded by his GP or other reports as the impact of the anxiety. They say that it is litigation induced stress and anxiety which impacts IBS and eating properly to support that condition. But if main day-to-day activity is working then not made out as reports all say can return once some of issues resolved by the respondent as they are viewed by the claimant to be issues. Whilst there is a summary of impacts on the claimant, there is no indication of the years they apply to and most seem to be from 2018 such as the assessment from the DWP which says from 2018 for 24 months but that does not bring it to the March 2022 date. The claimant failed to provide the 2022 Occupation Health notes for the report where suicide was discussed. Not clear why this was not provided for this preliminary hearing as that would support his condition being severe at the time. The claimant said he did not have time to provide this but if he is pursuing this matter then responsibility on him to provide key evidence he seeks to rely upon. c. The effects of the stress and anxiety were likely to last at least 12 months or more from March 2022? Or likely to recur? The 2021 report by Karl [Woolley] recommends 15 more sessions to assist the claimant in coping with litigation stress so he can manage things properly. Whilst the previous determination noted stress was bad for a period of time, I agree they would have considered recurrence in that decision – whether likely to occur again at that level within 12 month or more, but they did not find that it was likely to recur. I find I cannot look at 2023 evidence of the severity of the claimant’s mental health as it needs to be what the respondent reasonably should have foreseen at that time. The condition seemed manageable at that point in time and the claimant’s day-to-day activities were not impacted so say that condition could be foreseen as lasting 12 months or more”
'In any deduced effects case of this sort the claimant should be required to prove his or her alleged disability with some particularity. Those seeking to invoke this peculiarly benign doctrine under para 6 of the schedule should not readily expect to be indulged by the tribunal of fact. Ordinarily, at least in the present class of case, one would expect clear medical evidence to be necessary'.'