The Bank of England currently issues Five Pound, Ten Pound, Twenty Pound and Fifty Pound notes for Britain, plus a variety of banknotes for a number of other countries.
The Bank of England don't currently have £100 notes, but the Bank of Scotland do and they are red. The English £50 notes are red as well.
A bank of issue is a bank which issues its own notes payable to the bearer.
Probably nothing. There is no obligation on any bank to accept withdrawn currency.The Bank of England advises that -Genuine Bank of England notes that have been withdrawn from circulation retain their face value for all time and can be exchanged at the Bank of England in London. There is no fee for this service.but they do not specify whether or not that includes predecimal currency.See the link below.
Bank of England Ten Shilling notes issued from October 1961 had a serial number format of LNN (letter, number, number) followed by 6 digits, eg. A01 123456. Serial numbers for this period commenced with the following letters - A, B, C, D, E, H, J and K. Replacement notes commenced with M and used the range M01 to M18. These serial ranges may have extended into 1962.
Damaged or worn out notes and notes that are withdrawn from circulation are returned to the Bank of England for destruction.
The Bank of England has the sole responsibility for issuing English banknotes.
The currency of the UK is the Pound Sterling (or more normally, just Pound). The Bank of England produces all of the banknotes for England and Wales, whilst several banks in Northern Ireland and Scotland produce notes to their own designs. Jersey, Guernsey and the Isle of Man also issue their own notes. The only notes in current issue in England are £5, £10, £20 and £50. Scotland, Jersey, Guernsey and the Isle of Man also have £1 notes. Scotland and Northern Ireland also issue £100 notes.
Current Bank of England banknotes include the Five, Ten, Twenty and Fifty Pound notes. Prior to decimalisation, 20th century Bank of England banknotes included the Ten Shilling, One, Five, Ten, Twenty, Fifty, One Hundred, Two Hundred, Five Hundred and One Thousand Pound notes. The Ten pound and higher notes were discontinued in 1945.
The Bank of England has never issued a One Million Pound note for general circulation. Since the various note issuing banks of Scotland and Northern Ireland are backed by the Bank of England, the Bank of England produces One Million and One Hundred Million Pound notes for the use of the note issuing banks, so that they can hold equivalent values of Bank of England notes. They are strictly for internal use and have probably never been seen outside of the vault.
The Bank of England advises - All Bank of England notes from which legal tender status has been withdrawn remain payable at face value forever at the Bank of England in London. Any such notes may be presented for payment either in person during business hours, or sent to us by post.
See the Bank of England link below.