Hmmm, I really don't know branno. Here in UK if you say you're single that's it, your word is accepted.
If you were still legally married either here or overseas I imagine no one would really know or check. Well apart from the potential outcome of wedding banns.
But, that doesn't mean your single just because you say so or there is no marriage registered. It means you're telling porkies and could end up in prison.
Or worse
