Jews are forbidden from proselytizing among "gentiles" (it's OK for the Mitzvah Tank to encourage wayward Jews to return to active worship), but anybody who chooses to convert and goes through the sanctioned training process is welcomed in principle (even if there may be naysayer indvidiuals). In most cases it's to satisfy a potential spouse or spouse's family who, IMO, has often bullied the person into conversion (refusal to accept a marriage without conversion is a form of bullying, no?).
There are plenty of Scottish Jews. I knew a guy whose ancestry was Scottish Jewish, and he said, "I'm doubly cheap." Which reminds me of a Scottish condom joke...
Can we have a rubber stamp made of that?