(England Twitter)-First sterling notes were issued by the Bank of England shortly after its foundation in 1694. Denominations were initially written on the notes at the time of issue. From 1745, the notes were printed in denominations between £20 and £1000, with any odd shillings added in hand. £10 notes were added in 1759, followed by £5 in 1793 and £1 and £2 in 1797. The lowest two denominations were withdrawn following the end of the Napoleonic wars. In 1855, the notes were converted to being entirely printed, with denominations of £5, £10, £20, £50, £100, £200, £300, £500 and £1000 issued.
The Bank of Scotland began issuing notes in 1695. Although the pound scots was still the currency of Scotland, these notes were denominated in sterling in values up to £100. From 1727, the Royal Bank of Scotland also issued notes. Both banks issued some notes denominated in guineas as well as pounds. In the 19th century, regulations limited the smallest note issued by Scottish banks to be the £1 denomination, a note not permitted in England.
With the extension of sterling to Ireland in 1825, the Bank of Ireland began issuing sterling notes, later followed by other Irish banks. These notes included the unusual denominations of 30/- and £3. The highest denomination issued by the Irish banks was £100.
In 1826, banks at least 65 miles (105 km) from London were given permission to issue their own paper money. From 1844, new banks were excluded from issuing notes in England and Wales but not in Scotland and Ireland. Consequently, the number of private banknotes dwindled in England and Wales but proliferated in Scotland and Ireland. The last English private banknotes were issued in 1921.
In 1914, the Treasury introduced notes for 10/- and £1 to replace gold coins. These circulated until 1928, when they were replaced by Bank of England notes. Irish independence reduced the number of Irish banks issuing sterling notes to five operating in Northern Ireland. The Second World War had a drastic effect on the note production of the Bank of England. Fearful of mass forgery by the Nazis (see Operation Bernhard), all notes for £10 and above ceased production, leaving the bank to issue only 10/-, £1 and £5 notes. Scottish and Northern Irish issues were unaffected, with issues in denominations of £1, £5, £10, £20, £50 and £100.
The Bank of England reintroduced £10 notes in 1964. In 1969, the 10/- note was replaced by the 50p coin as part of the preparation for decimalisation. £20 Bank of England notes were reintroduced in 1970, followed by £50 in 1982. Following the introduction of the £1 coin in 1983, Bank of England £1 notes were withdrawn in 1988. Scottish and Northern Irish banks followed, with only the Royal Bank of Scotland continuing to issue this denomination.
The £5 polymer banknote, issued by Northern Bank in 2000, is the only polymer note currently in circulation, although Northern Bank also produces paper-based £10, £20 and £50 notes and, interestingly, notes named "titan". A titan is a £100,000,000 (one hundred million pound) bank note, of which there are only 40 in existence. Titans are only used within the banking system and are unobtainable by the general public.