Conspiracy to murder
Conspiracy to murder is a statutory offence in England and Wales and Northern Ireland and the Republic of Ireland. The same offence is also covered in the Canadian Criminal Code and covered by laws in various states in Australia.
England and Wales
Conspiracy to murder is an offence by virtue of section 1(1) of the Criminal Law Act 1977.
Section 1(4) of the Criminal Law Act 1977 formerly provided that it was immaterial that the murder in question would not be triable in England and Wales if committed in accordance with the intention of the parties to the agreement. This reproduced the effect of section 4 of the Offences against the Person Act 1861.
See now section 1A of the Criminal Law Act 1977.
As to the maximum sentence in a case where the agreement was entered into before Part I of the Criminal Law Act 1977 came into force, see section 5(5) of that Act.
The following cases are relevant:
- R v Khalil and others  2 Cr App R (S) 24
- R v McNee, Russell and Gunn  EWCA Crim 1529  1 Cr App R (S) 24
- R v Barot  EWCA Crim 1119,  1 Cr App R (S) 31 (see Dhiren Barot)
Conspiracy to murder is an offence by virtue of article 9(1) of the Criminal Attempts and Conspiracy (Northern Ireland) Order 1983 (S.I. 1983/1120 (N.I. 13)).
See, formerly, article 9(4) of that Order.
See article 11(2)(a).
Republic of Ireland
The law varies between states with the maximum sentence for this offence being 14 years’ imprisonment in Queensland and 25 years’ imprisonment in New South Wales. 
- R v Siracusa, 90 Cr App R 340 at 350,  Crim LR 712, CA
- The Criminal Law Act 1977, section 3(2)(a)
- The Irish Statute Book says that has been neither repealed nor otherwise amended.
- Criminal Code, RSC 1985, c C-46, s 465(1)(a).