6. The coming into force of the following provisions of the Act is of no effect in relation to a person convicted before 3rd December 2012—
(a)section 123 (abolition of certain sentences for dangerous offenders); and
(b)the following provisions of Schedule 22—
(i)paragraphs 3 and 4 (abolition of sentence of imprisonment for public protection: dangerous offenders aged 18 or over subject to service law);
(ii)paragraph 6 (abolition of extended sentence for certain violent and sexual offences: dangerous offenders aged 18 or over subject to service law);
(iii)paragraphs 7 and 8 (abolition of sentence of detention for public protection: dangerous offenders aged under 18 subject to service law); and
(iv)paragraph 10 (abolition of extended sentence for certain violent and sexual offences: dangerous offenders aged under 18 subject to service law).