Secretary of State for the Home Department, Ex Parte Pierson, R v.

Factual and Procedural Background

The Appellant was convicted in July 1985 of the shotgun killings of both parents at the family home. He received the mandatory sentence of life imprisonment. In 1988 the then Respondent (Secretary of State) fixed the “tariff” – the minimum term to be served for retribution and deterrence – at 20 years after confidential consultation with the trial judge and the Lord Chief Justice, who had recommended 15 years.

Following the House of Lords’ decision in Ex Parte Doody (1994), the Respondent disclosed the judicial recommendations and invited representations. The Appellant’s solicitor pointed out that the murders were neither pre-meditated nor two distinct offences. Nevertheless, on 6 May 1994 the Respondent maintained the 20-year tariff, now stripped of the aggravating factors originally relied upon.

The Appellant sought judicial review. Judge Turner quashed the decision; the Court of Appeal reinstated it. The present appeal came before the House of Lords.

Legal Issues Presented

1. Does the Respondent possess a general power to increase a mandatory life prisoner’s tariff once it has been fixed and communicated?
2. Is any such increase contrary to common-law principles preventing the aggravation of penalties and/or to the Appellant’s legitimate expectation based on earlier policy statements?
3. Did the procedure followed by the Respondent satisfy the requirements of fairness?

Arguments of the Parties

Appellant's Arguments

• The Respondent’s decision effectively increased the punishment after it had been fixed, breaching a common-law principle against aggravating penalties.
• Earlier policy statements (1983 & 1987) promised that a tariff, once set, would not be increased; the Appellant had a legitimate expectation that this commitment would be honoured.
• The 1993 policy statement, relied on by the Respondent, was not expressed to operate retrospectively and therefore did not empower an increase in the Appellant’s case.
• The Respondent acted unfairly by failing to give clear notice that he intended to treat the previous tariff as inadequate.

Respondent's Arguments

• Section 35 of the Criminal Justice Act 1991 confers an unfettered discretion to decide when a mandatory life prisoner may be released; the court should not imply non-statutory restrictions.
• The 1993 policy expressly recognised a residual power to revise tariffs “exceptionally,” including upward revision, and applied to all mandatory life prisoners.
• The decision merely confirmed, rather than increased, an existing 20-year tariff.
• Procedural fairness was observed: the Appellant was informed of the judicial advice and invited to make representations.

Table of Precedents Cited

Court's Reasoning and Analysis

Majority (Judge Goff, Judge Steyn, Judge Hope)

• Earlier policy statements (1983 & 1987) assured prisoners that tariffs, once set, would not be increased except on narrowly defined grounds; those assurances generated a legitimate expectation.
• The 1993 policy referred only to an “initial” view taken by the then Secretary of State at the beginning of a sentence. It did not retrospectively authorise increases to tariffs already fixed under the previous policy.
• Fixing the tariff is, in substance, a sentencing exercise. Fundamental common-law principles, including the rule against retroactively aggravating penalties, therefore apply.
• Maintaining a 20-year tariff after removing the aggravating factors constituted an impermissible increase in punishment.
• No exceptional circumstances justified the increase, and the Respondent’s reliance on general discretion under section 35 could not override basic legal principles.

Dissent (Judge Browne-Wilkinson, Judge Lloyd)

• Section 35 grants a broad discretion; Parliament must be taken to have authorised policies allowing upward revision of tariffs.
• No universally applicable principle prohibits increasing a sentence; legislation (e.g., Criminal Justice Act 1988, s. 36) shows Parliament sometimes permits it.
• The 1993 policy clearly preserved a power of exceptional upward revision applicable to all mandatory life prisoners, including the Appellant.
• The Respondent’s decision was therefore lawful and not irrational.

Holding and Implications

APPEAL ALLOWED; DECISION QUASHED.

The House of Lords (by majority) ruled that the Respondent lacked authority to increase a mandatory life prisoner’s tariff once it had been fixed and communicated, unless truly exceptional circumstances justified the change. The decision to maintain a 20-year tariff therefore had to be set aside. The judgment reinforces the principle that executive decisions analogous to sentencing are constrained by common-law protections against retrospectively aggravating punishment. While flexibility in life-sentence administration remains, future Home Secretaries must respect this limitation; no new statutory precedent was created, but the ruling significantly curtails ministerial power over mandatory life tariffs.