A Sex offender who is convicted of rape is
A person (A) commits an offence if—
(a)he intentionally penetrates the vagina, anus or mouth of another person (B) with his penis,
(b)B does not consent to the penetration, and
(c)A does not reasonably believe that B consents.
(2)Whether a belief is reasonable is to be determined having regard to all the circumstances, including any steps A has taken to ascertain whether B consents.
(3)Sections 75 and 76 apply to an offence under this section.
(4)A person guilty of an offence under this section is liable, on conviction on indictment, to imprisonment for life.
https://www.legislation.gov.uk/ukpga/2003/42/section/1
Sex offenders in the UK who have been convicted of 1 or more counts of rape on children

Umar Zaman, 34, 2018 Huddersfield Grooming Gang Member, guilty of sexual assault of a child under the age of 13, sentenced to 8 years.
image: West Yorkshire Police – Umar Zaman 22.Umar Zaman, 34, of William Street, Crosland Moor, Netherton, Huddersfield, HD4 5, fled to Pakistan and was sentenced to 8 […]