Sentencing appeals in cannabis production: when a disputed “role” label does not make a guideline-range sentence manifestly excessive

1) Introduction

The appellant was tried with four co-defendants in the Crown Court. Police attended a terraced house after concerns linked to fly-tipping. Inside were substantial indicators of a cannabis grow, including equipment and 109 plants across three rooms. The electricity supply had been bypassed with exposed live wiring. The appellant was found hiding in the loft.

He was convicted of cannabis production and acquitted of abstracting electricity. He received two years’ imprisonment. He appealed sentence, arguing it was manifestly excessive, chiefly because (i) the sentencing judge treated his role as “significant” despite the parties’ agreed “lesser role” categorisation under the relevant Sentencing Council guideline, and (ii) the judge referred to prevalence (a ground later abandoned).

2) Summary of the judgment

The Court of Appeal dismissed the appeal. While observing that fuller reasons would have been preferable, the court held the sentence was not manifestly excessive. Given the scale of the operation, the team context, and evidence (conceded on appeal) of involvement in setting up the operation, the sentencing judge was entitled to view the appellant as not being at the bottom of the chain.

Crucially, although the judge treated the role as “significant”, he adopted a reduced starting point (3 years rather than the guideline starting point for category 2/significant role) and then made a further reduction for previous good character to 2 years. The Court of Appeal considered the same 2-year sentence could also have been reached by accepting “lesser role” but moving up within that range.

3) Analysis

3.1 Precedents cited

R v Nguyen Hai Dwan [2011] EWCA Crim 1604 (paras 8–9, as cited)

The Respondent relied on this authority for the proposition that participation in the set-up of a cannabis production operation is a culpability-enhancing feature. In this appeal, it supported the argument that the appellant’s role could rationally be assessed as more serious than that of a mere “gardener”, because set-up activity can denote a more operational function in the enterprise.

R v Thuan van Vu [2014] EWCA Crim 561

The Respondent relied on this case to resist the suggestion that knowledge of only a single premises necessarily precludes a “significant role” finding. The Court of Appeal, however, treated it as of limited assistance: it involved a substantially larger operation and (importantly) the defendant there was categorised as playing a lesser role as a gardener. That said, the citation still framed the Respondent’s broader submission that “role” is fact-sensitive and not mechanically determined by how many premises were known.

3.2 Legal reasoning

(a) The governing appellate test: “manifestly excessive”

The Court of Appeal approached the appeal through the orthodox lens: sentencing appeals do not provide a general opportunity to re-argue the factual evaluation of culpability. The question was whether the sentence fell outside the permissible range of reasonable sentencing outcomes. Even if a different judge might have selected a different categorisation, that does not itself establish manifest excess.

(b) Deference to the trial judge’s evidence-based assessment

A central reason for dismissing the appeal was institutional: the sentencing judge had presided over the trial and was “well placed” to evaluate the evidence bearing on the appellant’s function within the group. The Court treated the appellant’s challenge as, in substance, an invitation to revisit that evaluation.

(c) “Setting up” activity as an aggravating indicator of role

The court accepted that a person involved in setting up (as opposed to merely tending plants) may be more culpable, although it emphasised that the issue remains fact-specific. A key development in the appeal was a concession that there was evidence of the appellant’s involvement in set-up activity (including evidence that he had taken cannabis plants into the address). That concession reduced the force of the “lesser role only” submission.

(d) Reasons and procedural fairness where the parties agree a guideline categorisation

The appellant complained that the judge adopted a “significant role” approach without warning or inviting submissions, despite an agreed “lesser role” position. The Respondent answered that the judge was not bound by the agreement and was not obliged to invite specific submissions. The Court of Appeal did not treat any procedural deficiency as determinative; instead it noted that fuller reasoning would have been preferable but returned to the decisive question: whether the final sentence was manifestly excessive.

(e) Why the 2-year term was upheld even on the appellant’s framing

The court’s most outcome-focused point was arithmetic within the guideline structure:

• For category 2 / lesser role, the agreed starting point was 1 year with a range of 26 weeks to 3 years.
• For category 2 / significant role, the Respondent identified a starting point of 4 years with a range of 2½ to 5 years.

Although the judge treated the case as “significant role”, he adopted a 3-year starting point (below the significant-role starting point) and reduced to 2 years. The Court held that, given the scale and team operation, the judge could equally have accepted “lesser role” and moved up within that range to arrive at the same 2-year sentence. This reasoning effectively insulated the result from the dispute about the precise label.

3.3 Impact

(a) Practical consequences for sentencing submissions

• Agreed categorisations help but do not bind: parties may agree “role” and “harm” categories, but judges retain responsibility for classification and may depart.
• Appeal-proofing a sentence: where the imposed sentence can be justified within the guideline range (or via a plausible route within it), an appeal may fail even if the judge’s categorisation or reasoning is arguably imperfect.
• Evidence of “set-up” matters: defendants who are shown to be involved in establishing (or dismantling) a grow may struggle to portray their function as purely minimal/menial.

(b) Implications for arguments based on exploitation/pressure

The appellant advanced points often associated with modern cannabis-farm cases (language barriers, precarious immigration status, poverty, control). The Respondent disputed evidential support for coercion or exploitation, and the Court did not make findings endorsing exploitation as a driver of culpability reduction on these facts. Future cases will likely continue to turn on the quality of evidence demonstrating genuine pressure, coercion, grooming, or vulnerability-linked control (rather than assertion).

4) Complex concepts simplified

• “Manifestly excessive”: a high threshold; the appellate court asks whether the sentence is plainly outside the range a reasonable judge could impose, not whether it would have chosen something different.
• “Role” in drug guidelines (lesser vs significant): a culpability assessment. “Lesser role” often involves limited function under direction; “significant role” may include operational responsibility or a more important function within the chain.
• “Starting point” and “range”: the guideline provides a typical starting sentence for a category and a permissible bracket around it. Judges then adjust for aggravating/mitigating factors.
• Respondent’s Notice: the prosecution’s formal response on appeal, setting out why the appeal should be dismissed and on what basis.
• Prevalence: an argument that a type of crime is widespread in an area, potentially justifying deterrent emphasis. In this appeal, the prevalence ground was ultimately not pursued.

5) Conclusion

R v Nguyen Minh [2026] EWCA Crim 1019 illustrates a pragmatic appellate approach to sentencing challenges in cannabis production cases: even where the parties agreed “lesser role” and the judge’s reasoning for a higher culpability label was brief, the Court of Appeal will uphold a sentence that is defensible within the guideline framework—especially where the trial judge was uniquely placed to evaluate the evidence and where there is evidence of involvement in the set-up of the operation. The decision reinforces that, on appeal, the label matters less than whether the outcome is plainly wrong.