CBOs require timely notice and a proven, tailored link between the offending and harassment/alarm/distress

Introduction

In R v Simms [2026] EWCA Crim 379, the Court of Appeal (Criminal Division) considered whether a Criminal Behaviour Order (CBO) imposed at sentence was lawful and justified. The appellant had pleaded guilty to two counts of possession of Class A drugs with intent to supply, on an accepted basis of plea describing social supply within a group of friends.

The core issues were: (i) whether the prosecution’s very late CBO application (served at the door of court) complied with Criminal Procedure Rules requirements; (ii) whether the statutory test for a CBO under the Sentencing Act 2020 was met on the agreed facts; and (iii) whether the phone/SIM restrictions were proportionate and properly tailored.

Summary of the Judgment

The Court of Appeal allowed the appeal and quashed the CBO. It held that the CBO was wrong in principle and not justified by the accepted factual basis. The Court emphasised that the prosecution’s late, poorly-founded application led the sentencing judge into error by considering the order “on the hoof”.

Analysis

Statutory framework: what must be proved for a CBO

The power arises under section 331(2) of the Sentencing Act 2020. The court may make a CBO only if:

  1. it is satisfied the offender engaged in behaviour that caused or was likely to cause harassment, alarm or distress to any person; and
  2. it considers making the order will help prevent the offender from engaging in such behaviour.

The Court also highlighted the seriousness of CBO breach: by section 339(2)(b), breach on indictment can attract up to 5 years’ imprisonment. That punitive potential underlines the need for careful, evidence-based decision-making.

Procedure: late notice and the “on the hoof” error

Under Criminal Procedure Rules 31.3(1)(a)(iii) and 31.3(2), a prosecutor must serve notice of intention to apply for a CBO “as soon as practicable (without waiting for the verdict)”. Here, the application was served only as the judge was about to enter court for sentence, despite multiple prior listings and ample opportunity to comply. The Court treated this as a clear breach of the Rules.

The late service was not merely technical. It interacted with a second defect: the supporting police statement was drafted on a factual premise the prosecution had abandoned by accepting the basis of plea. The sentencing judge was therefore invited to decide a serious, restrictive order without proper notice, preparation, or evidential alignment with the agreed case theory—precisely the kind of “on the hoof” decision-making the Court disapproved.

Precedents cited: caution, tailoring, and proportionality

The Court relied on R v Khan [2018] EWCA Crim 1472, where the CACD warned against treating CBOs as routine “box-ticking”. The cited passage stresses:

CBOs are “not lightly to be imposed”; courts must act with “caution and circumspection”; orders must be “tailored” to the individual; and proportionality is “intensively fact sensitive”.

In Simms, those principles were applied in a concrete way: the Court held the order was not sufficiently tethered to proven conduct on the accepted basis and was therefore not a justified, tailored prevention measure.

Legal reasoning: why the statutory test was not met on the agreed facts

The sentencing judge reasoned that even “social supply” was behaviour likely to cause harassment, alarm, or distress, and that restricting phones/SIMs would be a proportionate preventive measure given the appellant’s record. The Court of Appeal rejected that approach on the facts as agreed:

  • Insufficient evidential link to “harassment, alarm or distress”: the accepted basis described a limited episode of group drug use/splitting within a social circle. On that basis, the Court held it was not open to conclude (to the requisite standard) that the appellant engaged in behaviour likely to cause harassment, alarm, or distress in the way required by section 331(2).
  • No proper nexus between phones and the targeted mischief: the CBO’s core restrictions (one handset/one SIM, registration requirements, public-place limits) required a demonstrated connection between phone use and the behaviour said to cause harassment/alarm/distress. The Court found the conclusion that phones were materially implicated—and that these restrictions would help prevent the statutory harm—was unreasonable and inconsistent with the agreed basis.
  • Agreement to the basis of plea mattered: once the prosecution accepted the basis, the sentencing exercise (including ancillary orders) had to proceed on that footing, absent a proper evidential and procedural route to dispute it.

Sentencing Council guidance: “serious and persistent” anti-social behaviour

The Court noted the Sentencing Council’s description of CBOs as designed for “the most serious and persistent anti-social individuals” and reiterated that the court must decide both (i) whether the alleged behaviour occurred and (ii) whether it caused or was likely to cause harassment, alarm or distress. The facts as accepted did not justify treating this case as meeting that paradigm via a far-reaching phone restriction.

Drafting defects: an indicator of insufficient care

The drawn-up order reportedly stated (nonsensically) that the appellant “must” possess more than one SIM/handset, rather than “must not”. The Court proceeded on the assumption it was intended as a prohibition but treated the error as reflective of the lack of care that should not attend CBO-making, given the potential for severe consequences on breach.

Impact

The decision reinforces several practical constraints on CBO use in the Crown Court:

  • Compliance with CrimPR 31.3 is substantive: late notice can materially contribute to an unlawful or unsafe CBO because it undermines fair opportunity to respond and encourages rushed decision-making.
  • “Social supply” does not automatically equate to statutory “harassment, alarm or distress”: courts must identify a defensible evidential route from the proven facts to the statutory harm.
  • Technology restrictions require proof of relevance: phone/SIM limits must be justified by evidence showing they will help prevent the specific statutory mischief, not merely reflect general concerns about drug offending.
  • Ancillary orders must track the accepted factual basis: where a basis of plea is accepted, ancillary orders cannot be anchored to an earlier, abandoned narrative without a procedurally proper foundation.

Complex concepts simplified

Criminal Behaviour Order (CBO)
A court order added to a sentence that prohibits or requires specified conduct to prevent future behaviour causing (or likely to cause) harassment, alarm or distress. Breach is a criminal offence with potentially severe penalties.
“Harassment, alarm or distress”
The statutory threshold for CBOs: the court must be satisfied the offender’s behaviour either did cause, or was likely to cause, these impacts on others. It is not enough that behaviour is undesirable or unlawful; the statutory impact must be established.
“Tailoring” and “proportionality”
Tailoring means the order must fit the offender and the proven risk; proportionality means the restrictions must go no further than necessary to prevent the specific harm identified by the statute.
“On the hoof”
A decision made ad hoc, without proper notice, evidential foundation, or time for considered analysis—an approach discouraged for serious ancillary orders like CBOs.

Conclusion

[2026] EWCA Crim 379 confirms that CBOs are not routine add-ons to drug convictions. Courts must insist on timely notice, an evidentially sound finding that the offender’s proven behaviour caused or was likely to cause harassment, alarm or distress, and a tight, tailored, proportionate link between the proposed restrictions (here, phone/SIM controls) and prevention of that specific statutory harm. Where the prosecution’s application is late and inconsistent with an accepted basis of plea, a CBO is liable to be quashed.