What is the ratio in R v Kingston?

Involuntary intoxication provides no defence where the defendant still formed the requisite mens rea for the offence.

What did the court decide in R v Kingston?

The House of Lords upheld the conviction, ruling that proven intent cannot be excused by involuntary intoxication.

Why is R v Kingston important for intoxication law?

It establishes that the law focuses on whether mens rea was formed, not the circumstances leading to intoxication, even when involuntary.

What is the ratio in R v Kingston?

Involuntary intoxication provides no defence where the defendant still formed the requisite mens rea for the offence.

What did the court decide in R v Kingston?

The House of Lords upheld the conviction, ruling that proven intent cannot be excused by involuntary intoxication.

Why is R v Kingston important for intoxication law?

It establishes that the law focuses on whether mens rea was formed, not the circumstances leading to intoxication, even when involuntary.

Criminal1 min read

R v Kingston

[1995] 2 AC 355House of Lords1995

Cite this case in OSCOLA →All Criminal cases →

“Involuntary intoxication no defence if criminal intent still formed”

Facts

Kingston was secretly drugged with sedatives and alcohol by an acquaintance who intended to blackmail him. While in this involuntarily intoxicated state, Kingston indecently assaulted a 15-year-old boy. Kingston argued he would not have committed the offence but for the involuntary intoxication.

Issues

Whether involuntary intoxication can provide a defence to criminal liability where the defendant retains the capacity to form and does form the mens rea for the offence.

Held

The House of Lords held that involuntary intoxication is not a defence where the defendant, despite being involuntarily intoxicated, still formed the necessary intent for the offence.

Significance

This case definitively established the boundaries of the intoxication defence and confirmed that mens rea, not moral blameworthiness, is the key test for criminal liability.

Read the full brief — free

You're reading the free summary of R v Kingston. Create a free account to unlock the full reasoning, the cited authorities and the verbatim judgment — plus structured briefs for 412,000+ UK judgments.

Create free account Already have one? Sign in

No card required. Free forever.

OSCOLA Citation

R v Kingston [1995] 2 AC 355 (HL)

Criminal LawDefencesIntoxication

Read the full judgment elsewhere

Multiple official and mirror sources — pick whichever loads cleanly on your network.

LLBGDL

More Criminal cases

R v Reece Martin Kelly

[2026] EWCA Crim 268

R v Richard Alexander Welsh

[2026] EWCA Crim 466

R v Robert Michael Thomas

[2026] EWCA Crim 305

This case is reproduced verbatim from the public judgment published by The National Archives under the UK Government's Open Government Licence v3.0. If you appear in this case and believe it should not be published — for example because your conviction was quashed on appeal, you have statutory anonymity, or for other privacy reasons — request removal here.