Offences against the public interest

I. What comes under this head?

- treason
- sedition
- offences against the Offical Secrets Acts
- conspiracy
- riot
- violent disorder
- affray
- fear or provocation of violence
- harassment
- perjury


II. Conspiracy

1. Historically: an agreement to do something unlawful entered into by two or more people who intend to carry out the agreed purpose. 'Unlawful' meant: criminal, tortious, politically or morally wrong.

2. Criminal Law Act 1977: an agreement to commit offences (crimes only).
a) Exceptions:
aa) Agreements to commit a summary offence not punishable by imprisonment which are made 'in contemplation or furtherance of a trade dispute'.
bb) Where one of the parties agreeing is intended to be the victim.
cc) Where the only other person or persons participating are (1) his spouse, or (2) persons not being criminally responsible and an intended victim of the crime.
b) Agreements having non-criminal objects which are conspiracies:
aa) Conspiracies to defraud (non-criminal, even non-tortious).
bb) Agreements to engage in conduct which tends to corrupt public morals or outrages public decency, even though this would not amount to a crime if carried out by a single person otherwise than in pursuance of the agreement.