R v B [2013]

R v B [2013] EWCA Crim 3 established a significant legal precedent regarding the test for reasonable belief in consent under the Sexual Offences Act. The court clarified that the test is inherently objective, and the mental illness of the defendant should not be considered in assessing the reasonableness of the belief in consent.

The factual background of the case involved the defendant being convicted of raping his partner. The defendant, a paranoid schizophrenic, asserted that he engaged in the act because he believed he possessed sexual healing power. During the trial, the judge instructed the jury to disregard the defendant's mental illness when determining whether he reasonably believed in his partner's consent, as per Section 1(1) of the Sexual Offences Act 2003.

The defendant subsequently appealed on the grounds that the judge had misdirected the jury. The Court of Appeal, however, dismissed the appeal, with Hughes LJ delivering the court's reasoning.

Hughes LJ pointed out that the medical evidence in the case demonstrated that the defendant's mental condition did not impair his ability to comprehend whether his partner had consented. Even if it had, Hughes LJ emphasised that a delusional belief stemming from mental illness could not, in law, render reasonable a belief in consent when it did not exist. Unless the defendant's state of mind reaches the threshold of insanity, a belief in consent arising from mental illness must be assessed based on objective standards, excluding considerations of the mental illness itself.

Hughes LJ acknowledged the potential difficulty in drawing a clear line between what constitutes a relevant lack of ability and an irrelevant mental illness. He highlighted that cases involving a defendant's personality or abilities might be relevant, particularly if they hinder the individual's capacity to recognise social cues. Nevertheless, the judge concluded that such cases would be decided based on the specific facts at hand.

In summary, the court established in this case that, in assessing reasonable belief in consent under the Sexual Offences Act, the test is objective, and mental illness, unless reaching the level of insanity, should not be factored into the determination of whether the belief was reasonable. The decision also recognised the potential relevance of a defendant's personality or abilities in certain cases.
Back to blog
UOLLB SQE Turbocharge

UOLLB SQE Turbocharge

Get ready for the SQE1 with high-performance SQE Study Guides developed by UOLLB and published by UOL Press to revolutionise your study method and exam strategy.

Turbocharge SQE Performance Here

UOL Case Bank

Upon joining, you become a valuable UOL student and gain instant access to over 2,100 essential case summaries. UOL Case Bank is constantly expanding.
Speed up your revision with us now👇

Subscribe Now

Where are our students from?

Council of Europe
Crown Prosecution Service
Baker Mckenzie 
Yale University
University of Chicago
Columbia University
New York University
University of Michigan 
INSEAD
University of London
University College London (UCL)
London School of Economics (LSE)
King’s College London (KCL)
Royal Holloway, University of London 
Birkbeck, University of London
SOAS, University of London
University of Manchester
University of Zurich
University of York
Brandeis University
University of Exeter
University of Sheffield
Boston University
University of Washington
University of Leeds
University of Law
University of Kent
University of Hull
Queen’s University Belfast
Toronto Metropolitan University
Hong Kong University of Science and Technology
University of Buckingham
ESSEC Business School

  • Criminal Practice

    Diagrams and Charts

    Our carefully designed diagrams and charts will guide you through complex legal issues.

  • Criminal Law

    Clear and Succinct Definitions

    Key concepts are concisely defined to help you understand legal topics quickly.

  • Property Law

    Statutory Provisions

    Statutory provisions are provided side by side with legal concepts to help you swiftly locate the relevant legislation.

  • Public Law

    Case Summaries

    We have summarised important cases for you so that you don't need to read long and boring cases.

  • Evidence

    Rules and Exceptions

    Rules and exceptions are clearly listed so that you know when a rule applies and when it doesn't.

  • Company Law

    Terminology

    Legal terms and key concepts are explained at the beginning of each chapter to help you learn efficiently.

  • Case Law

    Case law is provided side by side with legal concepts so that you know how legal principles and precedents were established.

  • Law Exam Guide

    Law Essay Guide

    You will learn essential law exam skills and essay writing techniques that are not taught in class.

  • Law Exam Guide

    Problem Question Guide

    We will show you how to answer problem questions step by step to achieve first-class results.

  • Conflict of Laws

    Structured Explanations

    Complex legal concepts are broken down into concise and digestible bullet point explanations.

  • Legal System and Method

    Legal Research

    You will learn legal research techniques with our study guide and become a proficient legal researcher.

  • Jurisprudence and Legal Theory

    Exam-focused

    All essential concepts, principles, and case law are included so that you can answer exam questions quickly.