I live in UK, some time ago I wanted to login to my electric company account to check the bill and such, and I had forgotten my password - long story short I got my account locked and had to call them. To my surprise after completing my security checking over the phone (name, address, birthday) they simply told me my password over the phone, which would imply that they have it not hashed in their database.
EDIT: The question that is referred to as duplicate does not ask nor provide for authority in UK that would be responsible to deal with such issues (I am assuming here that there is such authority, while in fact there might not be one).
Is there an authority to which I could report this in UK?