Thanks Jan, yeah we do have. NI number…. so I think that shows ‘affiliation’, but as she is not employed ( or self-employed) in UK, she is not actually paying any contributions. The application for an A1 form seems to be requesting details of employer of your own ‘self employment details.
hopefully someone in the group will have had this experience in the last couple of years (yes, it appears to be since Brexit)
thank you x