@Graham *****
but it is considered that you are turning yourself in if you present yourself to immigration, but it's usually at an airport. I've walked out of immigration, back into the country, while on minor overstay, under 10 days though, as I didnt like what they were saying about my chances of re-entry at that checkpoint, and I wanted to make alternative plans. I did politely ask if I can turn around and go back in, and they nodded. I went to another border, through an agent, with the promise of a same-day re-entry, paid the overstay, got the overstay stamp, and came back in shortly after. But an immigration officer allowed me to backtrack into the country and disappear knowing I was on overstay already, is my point. I would think going to an immigration office would be considered the same as handing yourself in, and they would give a 7 day exit stamp for any refused visa application. Although even that is given at the sole discretion of any Imm. officer