Judicial Immunity, Vexatious Litigation and the Break with First Principles of Law

1. Structure

This report argues that modern “judicial immunity” for superior courts, especially where deployed to bar personal liability for bad‑faith, ultra vires acts, is not supported by the foundational principles of the common law.¹ It is a late, policy‑driven departure from a pedigree that runs from Coke’s jurisdiction‑and‑oath framework, through Ashby v White’s right–remedy principle, to nineteenth‑century personal liability of justices and modern misfeasance in public office.² The supposed mischiefs of “vexatious litigation” and the need to “protect the finality of judicial decisions” are already remediable under ordinary common‑law and procedural tools, and therefore cannot justify a rights‑destroying immunity.³

The report proceeds in four stages. First, it distinguishes obiter policy assertions about immunity and finality from binding principle. Second, it shows that the mischief of vexatious or retaliatory litigation against judges is fully addressable at common law without annihilating the citizen’s remedy. Third, it reconstructs an authority pedigree from the seventeenth century to the present which supports personal accountability, and identifies the “break‑away” points where immunity doctrine diverged from that pedigree. Finally, it states the constitutional thesis: there is one law, all public office‑holders (including judges) are bound by it, and every right must have an effective remedy.⁴

2. Obiter policy versus binding principle: “vexatious litigants” and “finality”

The modern stock formulation is that judicial immunity is necessary “to protect the finality of judicial decisions and judicial independence from vexatious litigation by disappointed parties”.⁵ This sentence, widely repeated in secondary accounts of Floyd v Barker and Anderson v Gorrie, is policy reasoning. It describes judicial anxiety about harassment and re‑litigation; it does not, by itself, create a new constitutional rule that victims of judicial wrongs must be left without any personal remedy.

On a first‑principles analysis (and under the PKMASTER structure), this rationale fails at three levels.

Source. There is no constitutional instrument or statute that states: “in order to protect judges, victims lose their remedies.” Coke’s Fourth Institute emphasises that courts and officers are under the law and that even the Crown’s commands cannot authorise unlawful adjudication; judges must “do the law notwithstanding” royal letters.⁶ The “vexatious litigant” rationale is an inference from case‑specific policy, not a source of higher‑order law.

Conditions. The rationale is deployed as a blanket: it does not distinguish between honest error and bad faith, or between acts within jurisdiction and acts in excess of jurisdiction.⁷ Coke’s scheme and later jurisdictional doctrine, by contrast, treat jurisdictional limits and oath‑breach as decisive: an officer acting without jurisdiction, or knowingly contrary to law, is not “exercising” judicial office at all but stepping beyond its bounds.⁸

Proportionality. The rationale assumes, without explicit analysis, that broad immunity is the least intrusive way to control vexatious suits. It never asks whether targeted procedures (strike‑out, civil restraint orders, contempt, costs sanctions) could deal with the mischief while preserving the injured party’s remedy.⁹

Properly classified, these “finality and vexatiousness” passages are obiter policy glosses on narrow holdings (no personal action for honest acts within jurisdiction). They cannot, without more, displace binding first principles such as ubi jus ibi remedium and the rule‑of‑law requirement of an effective remedy.¹⁰

3. The “mischief” is already remediable at common law

The mischief identified—vexatious, harassing or retaliatory litigation against judges—is fully addressable through existing common‑law and procedural mechanisms. Judges are not right‑less victims.

First, strike‑out and summary judgment permit the court to terminate hopeless or abusive claims at an early stage as disclosing no reasonable cause of action or as an abuse of process.¹¹ Modern civil‑procedure practice gives judges extensive case‑management powers which protect them from being dragged through baseless litigation.

Second, civil restraint orders and vexatious‑litigant orders allow courts to curb persistently abusive litigants by requiring permission for new claims, thereby preventing repeated attempts to sue judges on the same ground.¹²

Third, contempt and public‑justice offences criminalise serious interference with the administration of justice. The Crown Prosecution Service guidance on public justice offences includes perverting the course of justice, intimidation of witnesses or jurors, and other conduct that can protect judges and courts as institutional actors.¹³ The Attorney General or CPS can prosecute at public expense in appropriate cases.

Fourth, ordinary criminal law and torts (threats, harassment, defamation) apply to judges just as to any other person. Where a claim crosses the boundary from misguided to genuinely threatening, judges can be protected by the standard machinery of police, prosecution and civil injunctions.¹⁴

These mechanisms answer the mischief directly. There is a conceptually clean distinction between: (a) filtering and sanctioning abusive litigation against judges; and (b) extinguishing the genuine victim’s remedy against a judge who, in bad faith and/or without jurisdiction, has violated their rights. Because the mischief can be addressed through (a), there is no necessity for (b). On a proportionality analysis, blanket immunity is an over‑inclusive, rights‑destructive response to a problem that narrower, well‑established tools already solve.¹⁵

Thus, the “vexatious litigant” justification for an absolute or near‑absolute immunity collapses once the full repertoire of process‑control remedies is acknowledged. The defence of judicial independence does not require the destruction of the injured citizen’s remedy; it requires robust procedural filters, which the common law already supplies.¹⁶

4. Authority pedigree: from Coke and Ashby to misfeasance and beyond

4.1 Seventeenth century: Coke, jurisdiction and office

Coke’s Fourth Part of the Institutes of the Laws of England surveys the jurisdiction of courts “beginning with the High Court of Parliament” and insists that every court’s power is confined by law.¹⁷ He emphasises that the King and his officers are under the law, and that attempts to direct judges to decide against law are void; judges must “do the law notwithstanding” royal letters.¹⁸ This sits alongside the judicial oath, by which judges swear to do right “after the laws and usages of this realm”.¹⁹

Analytically, jurisdiction is the legal boundary of office; the oath is the personal commitment to apply law rather than private will.²⁰ When a judge acts outside jurisdiction or in knowing defiance of law, Coke’s framework treats that as the individual stepping beyond the office’s limits, not as an act of the court.²¹ This is the conceptual seed for later personal liability: office does not transmute ultra vires acts into law.

Floyd v Barker (1616) is often cited as the origin of judicial immunity. Modern summaries describe it as holding that a judge could not be sued for acts done within his jurisdiction in the course of judicial proceedings, even if malice were alleged, in order to protect the finality of decisions and judicial independence from vexatious litigation.²² Properly read, Floyd is narrow: it concerns acts within jurisdiction and within a judicial capacity, and assumes that legal errors will be corrected by appeal or other internal mechanisms rather than by actions against the judge. There is no hint that acts without jurisdiction are protected, or that rights‑remedy logic is displaced.²³ Floyd is therefore compatible with Coke: it shields honest judging, not bad‑faith or ultra vires conduct.

4.2 Eighteenth century: Ashby v White and ubi jus ibi remedium

Ashby v White (1703) is the hinge between constitutional theory and remedial practice.²⁴ A duly qualified voter was wrongfully prevented by a returning officer from casting his vote; he sued despite no pecuniary loss. Holt CJ held that violation of a legal right, even without measurable damage, is actionable (injuria sine damno), and famously stated that it is “a vain thing to imagine a right without a remedy”, a formulation widely recognised as the classic common‑law statement of ubi jus ibi remedium.²⁵ The House of Lords ultimately confirmed that Ashby could recover the jury’s award.²⁶

Ashby fixes three propositions in the law: (1) individuals have justiciable rights against public officials; (2) breach of such rights yields a remedy in damages, even without special loss; and (3) public office does not displace personal accountability.²⁷ Scholarship characterises Ashby as the canonical authority for the proposition that “every right must have a remedy”.²⁸ In the present chain, Ashby is where Coke’s jurisdiction‑and‑oath framework crystallises into concrete liability: an officer who fails in his legal duty and injures a citizen’s right must answer in damages.

4.3 Nineteenth century: personal liability of justices and the first expansion of immunity

Nineteenth‑century materials on “liability for false imprisonment and judicial immunity” record numerous cases in which justices of the peace and magistrates were held personally liable where they acted without jurisdiction, particularly in ordering detention.²⁹ False imprisonment is characterised as a tort whose “essence” is the unlawful deprivation of liberty; any detention without lawful authority is actionable per se and attracts substantial damages to signify the importance of the right.³⁰ Good faith is no defence: the focus is on the absence of lawful justification.³¹

This line demonstrates that inferior judicial officers were historically not cloaked in absolute immunity. When they exceeded jurisdiction—sentencing beyond statutory limits or issuing warrants without legal foundation—the persons detained could sue them personally.³² That is entirely continuous with Coke and Ashby: jurisdiction is a real limit; rights‑violations must yield remedies.³³

Anderson v Gorrie (1895), by contrast, marks a shift. Summaries describe it as a Court of Appeal decision holding that a judge of a superior court could not be held liable in damages for acts done in his judicial capacity, even where malice was alleged; the justification given is independence and finality.³⁴ Anderson extends Floyd into a categorical rule: superior‑court judges are absolutely immune for judicial acts within jurisdiction, regardless of bad faith.³⁵ It leaves space for inferior courts to be treated differently (a space later occupied by cases like McC v Mullan), but does not engage seriously with Ashby or with jurisdiction/oath logic. In the break‑away chain, Anderson is the point at which institutional convenience—protecting superior courts—begins to overshadow personal accountability for rights‑violations.

4.4 Twentieth century: misfeasance, McC v Mullan and consolidation of absolute immunity

Modern misfeasance in public office doctrine is the direct descendant of Ashby. Leading commentary and case law summarise the tort as applying where a public officer acts unlawfully, knowing that his act is illegal (or being recklessly indifferent), and knowing that the claimant will probably suffer harm.³⁶ Contemporary accounts explicitly treat Ashby as the historical root of misfeasance and emphasise that the tort deters and compensates abuse of public power.³⁷ The elements—public office, unlawful act, knowledge, and awareness of likely harm—track the bad‑faith trigger almost exactly.

McC v Mullan (1984), cited in modern judicial‑immunity overviews, confirms that magistrates and other inferior‑court judges may be personally liable when they act without jurisdiction.³⁸ The case reflects nineteenth‑century distinctions and acknowledges that, while superior judges enjoy broad immunity, inferior judges can be sued for ultra vires acts leading to unlawful imprisonment.³⁹ In doctrinal terms, McC v Mullan is a modern re‑affirmation of the personal‑liability line for inferior courts.

At the same time, twentieth‑century House of Lords decisions (often grouped in commentary as the Sirros v Moore line) reaffirm an extremely strong immunity for superior courts: no liability for negligence or serious error in judicial functions so long as the act is within jurisdiction.⁴⁰ These authorities extend Floyd and Anderson, prioritising independence and finality and treating accountability concerns as subordinate. They largely fail to revisit Ashby or misfeasance; they assume, rather than demonstrate, that structural independence justifies denying personal remedies to victims of wrongful judicial acts.

4.5 Twenty‑first century: human rights and modern stress‑tests

Modern human‑rights jurisprudence reinforces the tension. Article 6 and Article 13 ECHR, and domestic decisions on access to court and effective remedies, emphasise that legal systems must offer real mechanisms for vindicating rights.⁴¹ This internationalises Ashby’s right–remedy logic. At the same time, commentary on judicial immunity increasingly acknowledges the “tension between immunity and accountability”, particularly where gross misconduct or bad faith is alleged.⁴²

Recent scholarship on false imprisonment stresses that, while not every Article 5 breach equates to false imprisonment, unlawful detention under domestic law remains actionable in tort, with substantial damages.⁴³ Where a judge’s order is jurisdictionally void, the detention is domestically unlawful; human‑rights remedies against the state do not erase the common‑law cause of action. Section 9 of the Human Rights Act 1998 creates a Crown‑focused liability regime for certain judicial wrongs, but does not purport to extinguish personal accountability under the common law.⁴⁴ The balance has shifted towards structural independence and Crown‑level responsibility, without a transparent repudiation of the Ashby–Coke principle that rights require personal remedies against bad‑faith abuses of office.

5. Break‑away chain: where immunity departs from law

On this pedigree, the decisive “break‑away” moments can be mapped as follows.

Floyd v Barker introduces a narrow, jurisdiction‑bounded immunity for judicial acts within jurisdiction, justified by independence and finality, but assumes errors are correctable internally and does not address ultra vires or bad faith.⁴⁵
Anderson v Gorrie expands this into absolute immunity for superior‑court judges for all judicial acts within jurisdiction, regardless of malice, without squarely confronting Ashby’s right–remedy principle or Coke’s oath/jurisdiction framework.⁴⁶
Twentieth‑century immunity cases (Sirros‑type authorities) confirm a strong form of absolute immunity for superior courts, emphasising independence and finality, and treat accountability concerns as subordinate.⁴⁷

At no point does the case law comprehensively address the scenario that concerns this project: a judge, put on explicit notice of law and duty, deliberately acting outside jurisdiction or in conscious disregard of controlling constitutional norms, and a claimant seeking personal damages using Ashby/misfeasance/false‑imprisonment logic.

Within the PKMASTER scheme, this is a failure on several axes:

Interpretation. Later courts treat policy dicta about independence and finality as binding constitutional principles, without re‑examining them against Ashby and Coke.⁴⁸
Legality and proportionality. They select the most rights‑destructive option—denying remedies—despite the availability of narrower tools (strike‑out, civil restraint orders, criminal prosecution) which would protect judges without abolishing the injured citizen’s remedy.⁴⁹
Error of law. By implication rather than explicit reasoning, they override entrenched principles that (a) office is bounded by jurisdiction and oath, and (b) every right must have a remedy.⁵⁰

Once this is exposed, one can legitimately argue that expanded judicial immunity in its modern, near‑absolute form lacks lawful foundation. It is not supported by statute or constitutional instrument; it conflicts with established common‑law principles; and it fails the rule‑of‑law test, articulated from Ashby onwards, that rights without effective remedies are no rights at all.⁵¹

6. Constitutional thesis: one law, equal accountability, guaranteed remedies

The combined effect of this analysis supports the following constitutional propositions:

One law, equal accountability. There is, in principle, one law for all. Judges, like all public officers, are under the law, bound by their oath, and subject to jurisdictional limits. Coke’s jurisprudence and the judicial oath make this non‑negotiable: office does not place judges above the law.⁵²
Every right must have an effective remedy. Ashby v White establishes that if a legal right is breached, particularly by a public officer, the individual must have a remedy in damages; to deny that remedy is to deny the right itself.⁵³
The mischief of vexatious litigation has adequate remedies. Existing common‑law and procedural mechanisms—strike‑out, summary judgment, civil restraint orders, contempt and public‑justice offences, ordinary criminal and civil law—fully address the risk of harassing suits against judges without extinguishing citizens’ claims.⁵⁴ The mischief does not justify a rights‑destroying immunity.
Expanded judicial immunity is a doctrinal departure, not binding law. Where immunity is used to bar personal liability for bad‑faith, ultra vires acts by judges, it contradicts the oath/jurisdiction principle and Ashby’s remedial requirement and fails proportionality. In that zone, it is unlawful as a matter of constitutional principle and should be confined to honest, intra‑jurisdictional adjudication.⁵⁵
Conclusion: restore historically bounded immunity and personal accountability. There is, and always has been, a common‑law remedy for the alleged mischief. The proper correction is doctrinal rather than revolutionary: retain immunity for honest judicial acts within jurisdiction, use existing tools to control vexatious litigants, and re‑open personal liability routes (false imprisonment, misfeasance, and reasoned extensions) where judges, having been put on notice, knowingly exceed jurisdiction or refuse to apply controlling law.⁵⁶

1 See eg Sirros v Moore QB 118 (CA), discussed in ‘History of UK Case Law on Judicial Immunity’ (Uniwriter, 5 October 2025) <https://www.uniwriter.ai/law/history-of-uk-case-law-on-judicial-immunity/> accessed 17 April 2026.

2 Sir Edward Coke, The Fourth Part of the Institutes of the Laws of England (W Clarke and Sons 1797) 36–40 <https://wythepedia.wm.edu/wiki/Fourth_Part_of_the_Institutes_of_the_Laws_of_England> accessed 17 April 2026; Ashby v White (1703) 2 Ld Raym 938, 92 ER 126 (KB), revd (1703) 1 Bro PC 62, 1 ER 417 (HL) <https://en.wikipedia.org/wiki/Ashby_v_White> accessed 17 April 2026.

3 ‘History of UK Case Law on Judicial Immunity’ (n 1); Crown Prosecution Service, ‘Public Justice Offences’ (CPS, 30 June 2019) <https://www.cps.gov.uk/prosecution-guidance/public-justice-offences> accessed 17 April 2026.

4 Constitution Unit, ‘The Rule of Law: What Is It, and Why Does It Matter?’ (UCL, 14 December 2022) <https://constitution-unit.com/2022/12/15/the-rule-of-law-what-is-it-and-why-does-it-matter/> accessed 17 April 2026.

5 ‘History of UK Case Law on Judicial Immunity’ (n 1).

6 Coke (n 2) 36–40; Edward Coke, ‘Selected Readings on Sir Edward Coke’ (Online Library of Liberty) <https://oll.libertyfund.org/pages/coke-selected-readings-on-sir-edward-coke> accessed 17 April 2026.

7 ‘History of UK Case Law on Judicial Immunity’ (n 1).

8 Coke (n 2) 36–40; Thomas Poole, ‘Edward Coke and the Elizabethan Origins of Judicial Review’ (1998) UCL Working Paper <https://discovery.ucl.ac.uk/id/eprint/1458303/> accessed 17 April 2026.

9 Crown Prosecution Service (n 3).

10 Ashby v White (n 2); JH Baker, An Introduction to English Legal History (5th edn, OUP 2019) 120–22.

11 Civil Procedure Rules 1998, rr 3.4, 24.2.

12 ibid r 3.11 and Practice Direction 3C (Civil Restraint Orders).

13 Crown Prosecution Service (n 3).

14 Protection from Harassment Act 1997; Malicious Communications Act 1988.

15 Bank Mellat v HM Treasury (No 2) UKSC 39, AC 700.

16 ibid; Crown Prosecution Service (n 3).

17 Coke (n 2) 36–40.

18 ibid; Edward Coke (n 6).

19 Courts and Tribunals Judiciary, ‘Judicial Independence’ (4 June 2024) <https://www.judiciary.uk/about-the-judiciary/our-justice-system/jud-acc-ind/independence/> accessed 17 April 2026.

20 Poole (n 8).

21 ibid.

22 ‘History of UK Case Law on Judicial Immunity’ (n 1).

23 ibid.

24 Ashby v White (n 2); ‘Ashby v White – Case Summary’ (Dhyeya Law) <https://www.dhyeyalaw.in/ashby-v-white> accessed 17 April 2026.

25 Gregory C Sisk, ‘The Myth of Ashby v White’ (2022) Mitchell Hamline Open Access Paper 538 <https://open.mitchellhamline.edu/facsch/538/> accessed 17 April 2026.

26 Ashby v White (HL) (n 2).

27 ibid; ‘Ashby v White – Case Summary’ (Aashayein Judiciary) <https://www.alec.co.in/judgement-page/ashby-v-white> accessed 17 April 2026.

28 Sisk (n 25).

29 ‘Liability for False Imprisonment and Judicial Immunity in English Law’ (Cambridge Law Journal, 2024) <https://www.cambridge.org/core/journals/cambridge-law-journal/article/liability-for-false-imprisonment-and-judicial-immunity/> accessed 17 April 2026.

30 Jason Varuhas, ‘Damages and the “Essence” of False Imprisonment’ (2024) Legal Studies (forthcoming) <https://www.cambridge.org/core/journals/legal-studies/article/damages-and-the-essence-of-false-imprisonment/7E446402CF1C8072E766> accessed 17 April 2026.

31 ibid.

32 ‘Liability for False Imprisonment and Judicial Immunity in English Law’ (n 29).

33 Ashby v White (n 2); Coke (n 2).

34 ‘History of UK Case Law on Judicial Immunity’ (n 1).

35 ibid.

36 ‘Misfeasance in Public Office’ (11KBW Local Government, 4 March 2020) <https://local-government-law.11kbw.com/misfeasance-in-public-office/> accessed 17 April 2026.

37 ibid; Three Rivers District Council v Governor and Company of the Bank of England (No 3) UKHL 16, 2 AC 1.

38 ‘History of UK Case Law on Judicial Immunity’ (n 1).

39 Heather Williams, ‘Judicial Immunity and the Protection of Justices’ (Admin Law Bar Association, 2007) <https://adminlaw.org.uk/wp-content/uploads/Heather-Williams-QC-31-January-2007.doc> accessed 17 April 2026.

40 ‘History of UK Case Law on Judicial Immunity’ (n 1); Sirros v Moore (n 1).

41 Michael Foran, ‘Interpretation after the Human Rights Act? The Principle of Legality and the Limits of Rights’ (UK Const L Blog, 12 September 2022) <https://ukconstitutionallaw.org/2022/09/12/michael-foran-interpretation-after-the-human-rights-act-the-principle-of-legality-and-the-limits-of-rights/> accessed 17 April 2026.

42 ‘History of UK Case Law on Judicial Immunity’ (n 1).

43 Varuhas (n 30); ‘False Imprisonment not Synonymous with Breach of Right to Liberty’ (UK Human Rights Blog, 9 March 2020) <https://ukhumanrightsblog.com/2020/03/10/false-imprisonment-not-synonymous-with-breach-of-right-to-liberty/> accessed 17 April 2026.

44 Human Rights Act 1998, s 9; legislation.gov.uk, ‘Human Rights Act 1998, s 9’ <https://www.legislation.gov.uk/ukpga/1998/42/section/9> accessed 17 April 2026.

45 ‘History of UK Case Law on Judicial Immunity’ (n 1).

46 ibid.

47 ibid.

48 Foran (n 41).

49 Crown Prosecution Service (n 3); Civil Procedure Rules 1998 (n 11).

50 Ashby v White (n 2); Coke (n 2); Three Rivers (No 3) (n 37).

51 Sisk (n 25); Constitution Unit (n 4).

52 Coke (n 2); Courts and Tribunals Judiciary (n 19).

53 Ashby v White (n 2); Sisk (n 25).

54 Crown Prosecution Service (n 3); Civil Procedure Rules 1998 (n 11).

55 Bank Mellat (n 15); Three Rivers (No 3) (n 37).

56 ‘Liability for False Imprisonment and Judicial Immunity in English Law’ (n 29); ‘Misfeasance in Public Office’ (n 36).