Every National Notes banknote carries a unique serial number that identifies where it comes from and which design it belongs to in the series. Here is an example of how your unique serial number is created:

NNNH 123456 GB06

• NN – National Notes

• NH – Natural History series

• 123456 – Unique serial number for that individual note

• GB – Great Britain

• 06 – 6th banknote design in the series for that location