A person guilty by virtue of section 1 above of conspiracy to commit any offence or offences shall be liable on conviction on indictment—
in a case falling within subsection (2) or (3) below, to imprisonment for a term related in accordance with that subsection to the gravity of the offence or offences in question (referred to below in this section as the relevant offence or offences); and
in any other case, to a fine.
Paragraph (b) above shall not be taken as prejudicing the application of section 120 of the Sentencing Code (general power of court to fine offender convicted on indictment) in a case falling within subsection (2) or (3) below.
Where the relevant offence or any of the relevant offences is an offence of any of the following descriptions, that is to say—
murder, or any other offence the sentence for which is fixed by law;
an offence for which a sentence extending to imprisonment for life is provided; or
an indictable offence punishable with imprisonment for which no maximum term of imprisonment is provided,
the person convicted shall be liable to imprisonment for life.