N Moustache v Chelsea and Westminster NHS Foundation Trust
[2022] EAT 204
Cause of action estoppel
Arnold v National Westminster Bank plc [1991] 2 A.C. 93 at 104D-E; Virgin Atlantic Airways Ltd v Zodiac Seats Limited [2014] AC 160
Rule 52 of the Employment Tribunal Rules 2013
Employment Tribunal Rules 2013, Rule 52
Abuse of process (Henderson v Henderson)
Henderson v Henderson; Johnson v Gore-Wood & Co [2002] 2 AC 1; Test Claimants in the FII Group Litigation v Revenue and Customs Commissioners [2022] AC 1; Moorjani & Ors v Durban Estates Ltd [2019] EWHC 1229 (TCC)
Indirect discrimination under the Equality Act 2010
Equality Act 2010, sections 19 and 39
Assessment of claim forms by Employment Tribunals
Pranczk v Hampshire CC UKEAT027219VP and King v Thales DIS UK Ltd [2024] EAT 34
Appeal allowed.
The Employment Tribunal erred in its assessment of cause of action estoppel, Rule 52, and Henderson v Henderson principles. It failed to properly identify the complaints in the 2017 and 2021 claims, leading to perverse conclusions.
Matter remitted to a different Employment Tribunal.
The errors made by the Employment Tribunal were fundamental, requiring a redetermination of whether the 2021 claim was precluded by the 2017 claim.