This month's artwork, Jez Dolan's 'Wolfenden', marks the 50th anniversary of the Sexual Offences Act 1967.
Commissioned as part of 2015: Parliament in the Making, Jez Dolan translated the recommendations of the 1957 Wolfenden Report on homosexual offences into Polari (a British gay slang).
The Wolfenden Report recommended that homosexual behaviour between consenting adults should not be a crime. At the time it was published in the late 1950s, the use of Polari was at its height.
Only with the Sexual Offences Act 1967 were Wolfenden's recommendations partially implemented and homosexual acts between two men over 21 decriminalised.