20 Pounds Royal Bank of Scotland - COP 26 Summit Meeting

The Royal Bank of Scotland issued this commemorative polymer £20 to mark COP26, the UN climate conference held in Glasgow in November 2021 — the first time the UK had hosted the event. RBS's decision to tie a circulating denomination to an environmental summit was unusual; commemorative banknotes from Scottish clearing banks are rare in any form, and this one was produced while the bank was still majority state-owned following the 2008 bailout.

Thomas De La Rue's polymer substrate here is Safeguard — the same base material used for the Bank of England's polymer series, licensed from the Reserve Bank of Australia's Guardian technology.