Nat West is the National Westminster Bank plc. NatWest Bank is the new name for the Royal Bank of Scotland.
https://investors.natwestgroup.com/
The annual report makes interesting reading.
https://investors.natwestgroup.com/~/media/Files/R/RBS-IR-V2/annual-reports/full-annual-report.pdf

Some simple highlights:-
Customer Deposits are £479 Bn (£479,810 million)
Cash deposited with Central Banks £177 Bn (£177,757 million)
Loans to customer £358 Bn (£358,990 million)
Total Assets £781 Billion (£781,992 Million)
As at 11 February 2022, the UK Government held 50.94% of the issued share capital with voting rights of NatWest Group plc