In 2012 Northern Bank adopted the name of its Copenhagen - based parent company Danske Bank Group and rebranded its retail banking operation. In June 2013 the bank issued a new series of £ 10 and £ 20 notes bearing the new brand name; at the same time it also announced that it would cease production of £ 50 and £ 100 notes. Older notes bearing the Northern Bank name will continue in circulation for some time as they are gradually withdrawn, and remain acceptable forms of payment. In spite of the Danish name on the new notes, banknotes issued by Danske Bank are sterling notes and should not be confused with banknotes of the Danish krone issued by the Danmarks Nationalbank, Denmark 's central bank.
when did the £100 note go out of circulation
June 2013