Documents needed to get annuity

No, I’m not even at the stage where I am applying yet, nothing to hide, just wondered if anyone had any experience/ knowledge as I can’t find the answer anywhere, was just curious, not really that important, suppose I’ll find out when the time comes….thoughts are turning to these things now.

As far as I recall, I just gave my bank account number and sort code to my provider. After all they’d been taking money out of it for years.

Why haven't you gone straight to the bank to ask them? Are you wanting to hide something?

I don't know this. Why not call them and ask?
Personally I would expect they just want to know where to put the £££.