I didn`t know sainsburys bank was so competitive with its loans until I checked it out on the credit comparison site, and it was a real eye opener for me. The application process may take a little longer than other outside lenders; After authorization, customers receive their consent by mail, sign and return. Once Sainsbury`s has received this, it may take three to five business days for the money to appear in your account. Sainsbury`s was the first major UK supermarket to open a bank and start trading in February 1997. Sainsbury Bank has a fantastic and trustworthy brand that allows us to combine the shopping experience with personal finance and offers a number of quality products including insurance, credit cards, savings and credit.