...I felt this was a breach of my privacy and I was being identified.
You were mistaken.
No.
Another question. . . . I have accused this staff member at the store of breaching my
privacy in a verbal confrontation. Could this be viewed as defaming them in anyway?
1. Perhaps they will claim you have.
Doesn't make it true.
My often-recommended reply to non-specific, vague,
meant-to-intimidate, threats of "legal action" is
"Well, go on then!"
2. Don't immediately panic, defamation requires publication.
If you've accused them face to face, in conversation, and it was just the two of you,
then no, you may not have defamed them.
3. You don't have a right to privacy of the kind you think exists here.
And certainly not as the operator of a business.
As, say a director of a company, you're details are on the public record.
As, say, a sole trader, then your market, and certainly, your customers,
know who you are, or can find out relatively easily, should it be necessary.
There cannot be a breach of a right that does not, at law, exist.