After paragraph (ab) of the definition of serious sexual offender in section 6B(2) of the Sentencing Act 1991 insert —
"(ac) who has been convicted of committing the incidents of a sexual offence included in a course of conduct charge (within the meaning of clause 4A of Schedule 1 to the Criminal Procedure Act 2009 ) for which he or she has been sentenced to a term of imprisonment or detention in a youth justice centre; or".