Comment by Grue3
10 years ago
When I visited UK for the first time I did say I was giving a talk at a conference (which was true). I didn't know you're not supposed to say that. Granted that was many years ago, but they let me through.
I think the important part is that she visited for a second time. They already had her in the database and flagged her for some reason.
Giving a talk at a conference is fine. Getting paid to give a talk at a conference is for many (most?) categories of conference employment and hence not fine.