Can someone explain this to me please, is there a chance that my Thai girlfriend would not need a visa because even though I was born in the UK, I am an Irish citizen (EU)
TLDR : Answer Summary
The answer to the question is that yes, your Thai girlfriend will need a visa to visit the UK. Even though you are an Irish citizen (EU), this does not eliminate the need for her to obtain a visa. Responses indicated that she will need to provide evidence of her relationship, ties to Thailand, and the intention to return. The process can be complex and may involve significant documentation.