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Appeal against Sentence by Mark Keel against His Majesty's Advocate (High Court of Justiciary)

Smart Summary

Summary of Opinion — Appeal Against Sentence

Factual and Procedural Background

This is an appeal against sentence brought by the Appellant following a plea of guilty to murder. The Appellant was first remanded in custody after appearing on petition at a sheriff court on 1 July 2024 and pleaded guilty at a continued preliminary hearing on 30 April 2025. He had been indicted to a preliminary hearing on 25 April 2025, adjourned administratively to 30 April. At sentence, delivered on 27 May 2025 by the sentencing judge, the Appellant was given a life sentence with a punishment part of 22 years. The 22-year term was reached after a reduction from a headline of 24 years to reflect the plea; a statutory two-year uplift for domestic abuse aggravation was not challenged on appeal.

The factual narrative accepted by the court (an agreed narrative) describes a sustained and brutal assault on the Victim by the Appellant on 26–27 June 2024 at an address in The City. The Victim died of an acute subdural haemorrhage caused by extreme blunt force trauma. Post-mortem and medical evidence disclosed numerous external and internal injuries consistent with multiple punches, kicks and stamping, and other trauma to head, face, chest and abdomen. The Victim had a history of injuries predating the fatal assault, and the offence was found to be aggravated by abuse of a partner within the meaning of the relevant statute.

The Appellant is 33 years old and had a substantial history of domestic offending and relevant convictions from 2015 onwards, including custodial sentences and non-harassment orders. At the time of the offending he was the subject of community supervision and a restriction of liberty order. The agreed narrative records that, after the assault, the Appellant failed to seek prompt medical assistance, made false statements about the Victim having an allergic reaction, and delayed or discouraged appropriate help, during a prolonged period in which the Victim remained alive but severely injured. The Appellant has a history of substance misuse and relevant mental health diagnoses; he also lost an infant son in 2014, the anniversary of whose death occurred on the date of the incident and which the Appellant described as a contributory emotional factor.

Legal Issues Presented

  1. Whether the punishment part of 22 years imposed within a life sentence was excessive in all the circumstances such that the sentence constituted a miscarriage of justice.
  2. Whether the reduction made by the sentencing judge to reflect the Appellant's plea of guilty (a reduction from a headline of 24 years to 22 years) was inadequate, having regard to authorities on the assessment of discount for early pleas and the utilitarian value of the plea.

Arguments of the Parties

Appellant's Arguments

  • The Appellant accepted the gravity of the offence but submitted that the headline punishment part was excessive, particularly when compared with other recent authorities relied upon by the sentencing judge as yardsticks.
  • He relied on comparison with a precedent where a life-sentence punishment part was reduced on appeal (cited in the judgment) and argued that the sentencing judge erred in selecting a headline punishment part greater than that comparator.
  • The Appellant contended that the discount for his guilty plea should have been materially greater. He submitted that his plea produced significant utilitarian benefits (spar[ing family distress and avoiding a full trial) and that those benefits justified a larger reduction than was applied.
  • The Appellant emphasised his personal circumstances (substance misuse, the anniversary of his deceased child, mental health issues) as factors relevant to mitigation and to temper the sentence.

Respondent's Arguments

The opinion does not contain a detailed account of the Respondent's (Crown's) specific submissions on appeal.

Table of Precedents Cited

Precedent Rule or Principle Cited For Application by the Court
Precedent A v Respondent [2024] HCJAC 50; 2025 JC 156 Used as a contemporary yardstick for sentencing in a domestic homicide involving severe, sustained violence. The sentencing judge properly used this authority as a broad comparison. The appeal court observed differences in facts (e.g. weapon used and presence of a child) but accepted that Precedent A could provide a very broad indication of an appropriate headline sentence.
Precedent C v Respondent [2020] HCJAC 40; 2020 SCCR 397 Illustration of a severe sentence (punishment part of 22 years) sustained on appeal for a brutal murder involving sustained blunt force and multiple stab wounds. The court noted Precedent C showed that severe sentences of that magnitude had been sustained; it compared the Appellant's record and offending to conclude the present sentence was not excessive in light of the greater or comparable gravity.
Precedent B v Respondent [2015] HCJAC 43; 2015 SCCR 230 (Geddes) Guidance on reductions for guilty pleas and the approach to assessing utilitarian value; discussion of appropriate proportions for plea discounts. The court applied Geddes in assessing the appropriateness of the reduction for the plea, concluding that the sentencing judge's allowance was an exercise of discretion consistent with Geddes and related authorities.
Precedent E v Respondent [2011] HCJAC 129; 2012 JC 223 (Gemmell) Establishes that discount for a guilty plea is a matter of judicial discretion and will be interfered with on appeal only in exceptional circumstances; emphasizes timing and utilitarian value. The court relied on Gemmell to underscore that interference with the sentencing judge's exercise of discretion on plea discount is exceptional and that the judge's approach here fell within the proper exercise of discretion.
Precedent F v Respondent [2025] HCJAC 34; 2025 SCCR 344 (McMahon) Endorses Gemmell and Geddes; reiterates that the earlier a plea is tendered the greater its utilitarian value and potential reduction. The court cited McMahon to support the principle that pleas at or near first appearance provide the greatest reduction and to justify a modest reduction where the plea was delayed.
Precedent G v Respondent [2013] HCJAC 3; 2013 SCCR 88 (Murray) Applied Gemmell's principles and exemplified how plea timing and utilitarian value affect the scale of reductions. The court referenced Murray as part of the body of authority illustrating discretionary assessments of plea discounts and to show precedent for modest reductions where pleas are not very early.
Precedent H v Respondent [2007] HCJAC 64; 2008 JC 174 (Spence) Obiter observation that in non-murder cases a reduction for a plea at a preliminary hearing may be in the region of a quarter. The court noted Spence but clarified that its obiter comment does not create an entitlement and is not directly applicable to murder cases where the notional maximum discount is more limited.
Precedent I v Respondent [2009] HCJAC 89; 2010 JC 66 (Boyle) Guidance that in murder cases the notional maximum level of discount for a guilty plea is about one-sixth and may in some cases reduce to nil. The court relied on Boyle to explain the limited ceiling on plea discounts in murder cases and to reject the Appellant's suggestion that larger reductions were routinely available.
Precedent D v Respondent [2024] HCJAC 23; 2024 JC 364 (Barnes) Principle that it is not the process by which sentence is reached but the sentence after taking account of a guilty plea that must constitute a miscarriage of justice to justify allowing an appeal. The court invoked Barnes to emphasise the appellate standard for overturning sentencing decisions and to support the conclusion that no miscarriage of justice arose from the sentence imposed here.

Court's Reasoning and Analysis

The court's analysis proceeded by (i) assessing the gravity and particular features of the offence, (ii) comparing factual similarities and differences with recently decided authorities relied upon by the sentencing judge, and (iii) examining the principles governing the allowance for a guilty plea and the appellate standard for intervening in a sentencing exercise.

On the factual assessment, the court emphasised that the offence involved extreme, sustained and brutal violence producing numerous and severe injuries, including those consistent with stamping on the Victim's head, multiple rib fractures, internal organ damage and blunt force trauma causing an acute subdural haemorrhage. The court also highlighted aggravating features absent in some comparator authorities: the Appellant's relevant and significant previous convictions for domestic offending, the fact he was subject to supervision and a restriction of liberty at the time of the offence, and his failure to seek prompt medical assistance combined with active obfuscation that prevented earlier treatment. The prolonged period over which the Victim was left without appropriate medical care and the Appellant's dissuasion of a child from calling for help were considered materially aggravating.

On comparative authority, the court accepted that precedents such as Precedent A and Precedent C provide broad indications only and do not determine sentence in a different factual matrix. The court acknowledged factual differences (for example, the use of a knife and the presence of a child at the scene in one precedent) but concluded that the violence in the present case was comparable in its extreme and sustained nature and that the Appellant's prior record made the case at least as serious as those precedents.

On plea discount principles, the court reviewed established authorities explaining that reduction for a guilty plea is discretionary, depends on the timing and utilitarian value of the plea, and is subject to a lower notional maximum in murder cases (about one-sixth). The court reiterated that the earlier a plea is tendered (ideally at or shortly after first appearance), the greater its utilitarian value and the larger the potential reduction. The Appellant had first appeared on 1 July 2024 but did not intimate his plea until mid-April 2025 and formally tendered it ten months after first appearance; the sentencing judge therefore applied a modest reduction (one-twelfth of the headline). The court held that this exercise of discretion was consistent with the authorities and principles cited and that the shorter reduction did not amount to a miscarriage of justice.

The court also recalled the appellate standard: an appeal against sentence will succeed only if the sentence after taking account of any plea of guilty is so excessive as to constitute a miscarriage of justice. Applying that standard, together with the factual aggravations and precedents, the court concluded that the sentencing judge did not err in principle or in the exercise of discretion.

Holding and Implications

Holding: The appeal is REFUSED.

Implications:

  • The sentence imposed by the sentencing judge — life imprisonment with a punishment part of 22 years (reduced from a headline of 24 years to reflect the plea, with 2 years attributable to statutory aggravation) — stands unchanged.
  • The court affirmed that comparative authorities are of limited, illustrative value and that sentencing judges retain a broad discretion in selecting an appropriate headline sentence and in quantifying any discount for a guilty plea, subject to appellate interference only in exceptional cases or where the final sentence constitutes a miscarriage of justice.
  • No new legal precedent on sentencing discounts or the assessment of aggravation in domestic homicide was established by this decision; the court applied and reiterated existing principles from earlier authorities concerning plea discounts, utilitarian value and appellate review of sentencing discretion.

Document produced from the provided opinion. All personal names and identifying details have been anonymised in accordance with the summary instructions.

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Appeal against Sentence by Mark Keel against His Majesty's Advocate (High Court of Justiciary)

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Appeal against Sentence by Mark Keel against His Majesty's Advocate (High Court of Justiciary)
(Oct 22, 2025)