not sure if anyone can help here, but grateful for any replies. I have a Thai male acquaintance, who is living in UK, he was married to a Swedish woman before and has entered Uk with Swedish passport. His swedish passport expires on 24th of January and he wants to go back to Thailand to renew his Swedish passport, asked him why he doesn't go to do it in Sweden, but he said long wait and also think he may have issues there with ex family. His question is, would he have a problem if left UK with Swedish passport expired as he doesnt have a visa for UK in Thai passport?