Great Britain

The Bank of England note system is built around clearly defined series, most notably Series D and Series E, which establish the transition from classical engraved paper notes to modern portrait-based designs. Series D introduced figures such as Florence Nightingale and William Shakespeare within a framework of detailed intaglio engraving, while Series E expanded this structure with scientific and cultural figures including Charles Darwin and Sir Isaac Newton, whose note incorporates the solar system and references to Principia. The seated figure of Britannia remains the constant institutional anchor, appearing as a watermark and design element across multiple generations of banknotes.

Modern polymer issues continue this system with precisely selected national figures. The Alan Turing 50 pounds note integrates Enigma cipher elements and early computing references, while the Jane Austen 10 pounds and J.M.W. Turner 20 pounds notes anchor literature and art within the currency. Earlier high-value issues such as the Duke of Wellington note reinforce historical continuity. Across all series, the structure remains fixed: monarch portrait on the obverse, thematic figure on the reverse, supported by advanced security features including metallic threads, holograms, and transparent polymer windows.