229The assessment of dangerousness
(1)This section applies where—
(a)a person has been convicted of a specified offence, and
(b)it falls to a court to assess under any of sections 225 to 228 whether there is a significant risk to members of the public of serious harm occasioned by the commission by him of further such offences.
(2)If at the time when that offence was committed the offender had not been convicted in any part of the United Kingdom of any relevant offence or was aged under 18, the court in making the assessment referred to in subsection (1)(b)—
(a)must take into account all such information as is available to it about the nature and circumstances of the offence,
(b)may take into account any information which is before it about any pattern of behaviour of which the offence forms part, and
(c)may take into account any information about the offender which is before it.
(3)If at the time when that offence was committed the offender was aged 18 or over and had been convicted in any part of the United Kingdom of one or more relevant offences, the court must assume that there is such a risk as is mentioned in subsection (1)(b) unless, after taking into account—
(a)all such information as is available to it about the nature and circumstances of each of the offences,
(b)where appropriate, any information which is before it about any pattern of behaviour of which any of the offences forms part, and
(c)any information about the offender which is before it,
the court considers that it would be unreasonable to conclude that there is such a risk.
(4)In this Chapter “relevant offence” means—
(a)a specified offence,
(b)an offence specified in Schedule 16 (offences under the law of Scotland), or
(c)an offence specified in Schedule 17 (offences under the law of Northern Ireland).