Mr Jack Mitchell > Chambers of Oliver Segal QC > London, England > Lawyer Profile

Chambers of Oliver Segal QC
Old Square Chambers
Jack Mitchell photo


Jack undertakes all employment/discrimination cases including injunctive relief, sport including internal investigations. Recent highlights include: Royal Mail v Jhuti [2017] EWCA Civ 1632 (scheduled for Appeal to the Supreme Court) an important whistleblowing case; Ali v New College Manchester Ltd UKEAT/0154/15/DM, 27 February 2017 concerning causation and constructive knowledge in disability discrimination; Sheredes School Governing Body v Davies UKEAT/0196/16/JOJ, 13 September 2016 considering time limits when a firm is intervened. Agbenowossi-Koffi v Donvand Ltd (t/a Gullivers Travel Associates) [2014] EWCA Civ 855, CA, Jack represented the Respondant from the Tribunal through to the CA, succeeding at each stage.




Co-author, Whistleblowing: law and practice, OUP (first edition, second edition and third edition 2017). “Whistleblowing law: a new playing field” World Sports Advocate June 2018. “Is Whistleblowing in Sport fit for purpose?” Law in Sport, 2017.
“Whistleblowing in Sport”, World Sport Advocate, 13 April 2017. For Lexis PSL, “The doctrine of res judicata – overview”; “The doctrine of res judicata”; “Key requirements to establish a res judicata”; “Cause of action estoppel”; “Issue estoppel”; “Res judicata and Henderson abuse”; “The doctrine of merger in judgment” and “Res judicata and foreign judgments”.



Lawyer Rankings

Regional Bar > South Eastern Circuit > Employment

(Leading Juniors) Ranked: Tier 1

Jack MitchellOld Square ChambersHe s very good at translating difficult legal issues into practical, easy to understand advice.

At Old Square Chambers, Jack Mitchell acts for both employers and employees in high-stakes cases. For trade unions, he represented BALPA, defeating British Airways’ attempt to obtain an injunction to halt a proposed pilots strike in July 2019. He also has whistleblowing expertise, and acted for the employer in the Supreme Court case Royal Mail v Jhuti, concerning if an employee who had made a protected disclosure could be dismissed by another decision-maker who had no knowledge of the disclosure.

Regional Bar > Western Circuit > Employment

(Leading Juniors) Ranked: Tier 1

Jack MitchellOld Square ChambersVery knowledgeable in the area of employment law and whistle blowing.

London Bar > Employment

(Leading Juniors) Ranked: Tier 3

Jack Mitchell – Old Square Chambers ‘The go-to junior for whistleblowing. Knows the subject, and how to present it to judges, backwards. Pragmatic, responsive, and intelligent, he is one to trust with your most important clients.