The Bank of England has revealed the new £50 note will feature the face of a prominent British scientist, with the public being asked to make nominations over the next six weeks.
To qualify for the shortlist, from which the winner will be selected, the scientist needs to be deceased, as the Bank will not put living people other than the monarch on notes.
Governor of the Bank of England Mark Carney will pick someone to feature on the new polymer note from the shortlist and the winner will be announced in 2019 along with a conceptual design.
To have your say, visit the Bank of England's online nomination page here.
The governor announced the start of the nomination period at the Science Museum in London this morning.
Mr Carney said: ‘There is a wealth of individuals whose work has shaped how we think about the world and who continue to inspire people today.’
‘Our banknotes are an opportunity to celebrate the diversity of UK society and highlight the contributions of its greatest citizens,’ he added.
Four leading scientists will work with a committee to draw up the shortlist.
You can nominate scientists on the Bank of England’s website.
The Bank have said anyone who has contributed to the fields of pure or applied science will be considered, which includes astronomy, biology, bio-technology, chemistry, engineering, mathematics, medical research, physics, technology and zoology.