The UK question is less important, but neither Wales nor Northern Ireland has ever expressed any significant desire to leave the UK. Support for unification with England remains at around 70-80% in both countries. Only Scotland has a significant independence movement.
https://www.thejournal.ie/lord-ashcroft-irish-unification-poll-4804372-Sep2019/
Also Sinn Fein winning the latest elections? What a weird thing to say
Oh huh, I haven't gotten any updates on the independence movements since Brexit so didn't realize that had impacted Northern Irish opinion so much.