In March 2018, the Treasury began a consultation looking at the potential withdrawal of the £50 note, as well as the one and two pence coins, on the basis that they are used significantly less than other denominations, with an additional rationale over the £50 note being the perception in the UK of its use in money laundering, tax evasion and other financial crime, despite the demand for it overseas. The Series F version was introduced in 2011, while its predecessor was in circulation for twenty years, so there was some consideration to withdrawing the £50 note entirely as a way of combatting tax evasion, and the fact that cash transactions using such a high value note are becoming increasingly rare. However, in October 2018 the Bank of England announced plans to introduce a Series G polymer £50 note, following the review by the government. The new £50 note is planned for introduction once the Series G £20 note featuring J. M. W. Turner is released. In July 2019, it was announced that the new note would feature computer pioneer Alan Turing, from a photograph taken by the Elliott & Fry photographic studio in 1951, a table of formulae from Turing's 1936 work "On Computable Numbers, with an application to the Entscheidungsproblem", an image of the Automatic Computing Engine Pilot machine, technical drawings of the British bombe machine, the quote "This is only a foretaste of what is to come, and only the shadow of what is going to be" from an interview Turing gave to "The Times" on 11 June 1949, and a ticker tape showing Turing's date of birth in binary code.