The Sexual Offences Act was passed in 1967.

Evidence

Hockney began work in 1966, while the Home Secretary, Roy Jenkins, was drafting the legislation to decriminalize homosexuality in England and Wales ; and it was published in 1967, just as Parliament passed Jenkins’s Sexual Offences Act. — Neil MacGregor, A History of the World in 100 Objects, 1473

Categorization

• corroborated: 2 independent passages support this claim — Neil MacGregor, A History of the World in 100 Objects, 1473