Their is news in the media, that Sainsbury’s Bank (part of the Sainsbury’s supermaket group) is to be sold to National Westminister Group.

https://news.sky.com/story/taxpayer-backed-natwest-among-initial-suitors-for-sainsburys-bank-12130791

Some figures from the Sainsbury’s annual report

https://www.about.sainsburys.co.uk/~/media/Files/S/Sainsburys/documents/reports-and-presentations/annual-reports/sainsburys-ar2020.pdf

Customer deposits of £6300 million.

Customer lending £7400 million