I recently had to go to my bank for a 'bank copy' of my current account, downloaded statements couldn't be used, the bank's branch statement was marked 'digital' I then had to photocopy the statement then take said statement along with actual photocopies of the statement to the PO but not just any old post office it had to be post office branch that certifies documents so the photocopies of the bank statement were certified and signed as such by the post office person and I also had to fill in a PO form which also had to have the receipt for the certifying service attached and also signed by the PO staff member.
This was for a pension lump sum payment being made to my bank account by a pensions company who, incidentally, communicated all of this and subsequent other information by email but refused point blank to accept the statement downloaded from my banking app and sent to them via email.
I had to post all of those documents including both sets of the bank statement to the pensions company.
You honestly couldn't make some of this shite up.