<Tr> <Td> (41) </Td> <Td> £ 5 </Td> <Td> Sir William Arrol </Td> <Td> vignette of the Forth Bridge </Td> </Tr> <Tr> <Td> (42) </Td> <Td> £ 10 </Td> <Td> Robert Burns </Td> <Td> vignette of Edinburgh Old and New Towns </Td> </Tr> <P> In Northern Ireland, four retail banks exercise their right to issue pound sterling notes: Bank of Ireland, First Trust Bank, Danske Bank (formerly Northern Bank) and Ulster Bank . Northern Bank and Ulster Bank are the only two banks that have issued special commemorative notes so far . </P> <P> Like other Northern Irish banks, Bank of Ireland retains its note - issuing rights from before the partition of Ireland; while Bank of Ireland is headquartered in Dublin, it issues sterling notes within the United Kingdom . In spite of its name, Bank of Ireland is not, and never has been, a central bank; it is a retail bank . Its sterling notes should not be confused with banknotes of the former Irish pound which were in use in the Republic of Ireland before the adoption of the euro in 2001 . </P>

How many banknotes are in circulation in the uk