The new banknotes are cleaner, stronger and last longer than the old paper notes.
How the £5 note has changed over 200 years
UK's NEW Polymer Banknote £5
How the £5 note has changed over 200 years
The most valuable £5 notes - serial numbers and the 'AA' codes to watch for - Mirror Online
Why are new banknotes made of polymer?
Can you still use a ripped 5 pound note? - Quora
First Look at the New £5: Does It Burn, Work at Self-Checkout, and Cope With Water?
Banknotes of the pound sterling - Wikipedia
U.K.'s New £10 Note Gets a Fresh Face: Jane Austen - The New York Times
All you need to know about the new £5 note, Consumer affairs
Rare and most valuable British banknotes worth up to £318 as new £50 note launch date revealed
Travelling To The UK? Don't Take £20 & £50 Paper Notes
Surprising Number of Polymer £5 and £10 Banknotes Replaced Due to Damage - CoinsWeekly
Old £5 notes can be worth up to £300 - see if you've got a hidden goldmine - Mirror Online
Everything you need to know about King Charles' coins and notes