• Produced by the private company De La Rue and issued by the central bank of the United Kingdom, the Bank of England.
• The Bank of England £50 banknote, featuring the portrait of Queen Elizabeth II, first entered general circulation on 23rd June 2021.
• Manufactured using a durable, thin, flexible plastic polymer supplied by 'CCL Secure', called Biaxially Oriented Polypropylene or 'BOPP', allowing for enhanced security features to prevent counterfeiting.
• Released into general circulation in the United Kingdom, British Overseas Territories and Crown Dependencies.

Bank of England £50 Banknote Reverse

• Features a portrait of Alan Turing, based on a photograph taken in 1951.
• Mathematical formulas from Alan Turing's 1936 paper, 'On Computable Numbers', are illustrated, considered to be fundamental to computer science.
• An illustration is shown of the Automatic Computing Engine or ACE, Pilot Machine, Alan Turing's groundbreaking computer design from 1945.
• Technical drawings are displayed showing the British 'Bombe', machine, which was used for codebreaking in World War II.
• A silver coloured, finely detailed, metallic image depicts the design of a microchip.
• A second, smaller clear window is located in the bottom left corner of the banknote, using a design based on the architectural features of the Bletchley Park mansion, where Alan Turing worked during World War II.
• A quote, taken from an interview which took place in 1949 where Alan Turing stated 'This is only a foretaste of what is to come and only the shadow of what is going to be', is shown.
• A red foiled patch with the letters 'AT', is located above the transparent security window.
• Alan Turing's birth date of 23rd June 1912 is displayed in binary code.
• Alan Turing's signature, taken from the visitor's book at Bletchley Park, which was once the top secret home of World War II Codebreakers is also illustrated.

Bank of England £50 Banknote Obverse

• Features the portrait of Queen Elizabeth II, facing left and towards the viewer, a portrait chosen by the Bank of England.
• The portrait of Queen Elizabeth II appears in a transparent security window to the left of the portrait with the text '£50 Bank of England', printed around the edge.
• A silver foiled patch, located above the transparent security window features a 3D image of the coronation crown.
• A gold and green coloured, finely detailed, metallic image featuring a design of a microchip is shown on the transparent security window alongside the portrait of Queen Elizabeth II.
• A second, smaller clear window is located in the bottom right corner of the banknote, using a design based on the architectural features of the Bletchley Park mansion, where Alan Turing worked during World War II.
• The numerical value of '50', appears in bright red and green under an ultraviolet light on the top right corner.
• The Bank of England seal and coat of arms feature on the bottom left corner on the reverse of the banknote.