Santander Post BBL Drawdown Checks Causing Added Stress

I received an email from someone who applied for and got a Bounce Back Loan from Santander, many months later they received a somewhat threatening if not ominous letter from that bank. Having checked, it appears many people have received such an email.

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This is what Susan Allen, CEO of Retail and Business Banking, Santander UK has said about post Bounce Back Loan drawdown account checks:

This is the letter that SME was sent by that bank: