Prior to 1 May 2004 -
Sex Offenders Act 1997
1 Sex offenders subject to notification requirements
(1) A person becomes subject to the notification requirements of this Part if, after the commencement of this Part�
(c) in England and Wales or Northern Ireland, he is cautioned by a constable in respect of such an offence which, at the time when the caution is given, he has admitted.
"A person of any other description... A period of 5 years beginning with that date"
1 May 2004 onwards -
Sexual Offences Act 2003
80 Persons becoming subject to notification requirements
(1) A person is subject to the notification requirements of this Part for the period set out in section 82 (�the notification period�) if�
(d) in England and Wales or Northern Ireland, he is cautioned in respect of such an offence.
"A person within section 80(1)(d)... 2 years beginning with that date"