LawByLak — Topic 17: Seld Defence (OCR H418, Paper 1)

Self-Defence and the Prevention of Crime

Two questions, asked in a fixed order. Get the order wrong and you lose half the marks before you write a word about the facts.

29 authorities in full · 35 spec checkpoints · 41 flashcards · 6 model answers from Level 2 to Level 4 · 1 real past paper, worked

Self-defence looks like one test and is actually two. Was force necessary at all, judged on the facts as the defendant honestly believed them? And was the amount of force reasonable, judged objectively but on that same subjective foundation? Most answers only ever ask the second one.

This guide teaches the order, then the exceptions, then the method that turns it into twenty marks under exam conditions.

What is inside

• Both limbs, separated properly. Why an unreasonable mistake still counts, and why a drunken one never does.
• All four conditions in section 76(8A). Nearly every textbook summary gives three. The one that gets dropped decides whether the householder rule applies at all.
• The householder provision as an exclusion, not a permission. Force that is not grossly disproportionate is not automatically reasonable. That second question is the one a Crown prosecutor got wrong, and R (Collins) v Secretary of State for Justice settled it.
• Excessive force, including timing. Force can be excessive because the danger had already passed, not only because the blow was too hard.
• The six-step overlay, run once per incident, so a three-incident scenario becomes three clean answers instead of one blurred one.
• Twenty-nine authorities grouped by the element they prove, with the traps named: why Scarlett is never cited alone, why Martin (Anthony) cannot be a householder case, and which Williams, which Martin, which Bailey.
• The full evaluation, with the counter-argument beside every criticism, because that is where the AO3 marks sit.

Written for the exam you actually sit

Every subsection is checked against the current text of section 76 of the Criminal Justice and Immigration Act 2008 on legislation.gov.uk, including the commencement dates. The case facts for the leading authorities are checked against the law reports, not against other revision sites.

What we will not pretend

Self-defence has been examined once: June 2022, Question 7* and Question 10*, identical wording, a Section B essay. It has never been set as a problem question. That sitting was taken under COVID advance information, so it is not a clean baseline, and no exemplar exists for it. Eight of the twenty-nine authorities carry facts that could not be recovered from the sources available, and each one says so on the page rather than offering an invented story.

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