They will most likely not pursue it in Australia, specially if the outstanding amount is not significant. However, HSBC ME is part of the HSBC Group worldwide and, if you are trying to bank with other HSBC entities around the globe it may raise a flag....I bank with HSBC locally and I can use my unique account number with other HSBC entities elsewhere...something which proves quite often fairly difficult for some of their competitors.....the fact that HSBC's overall service level can be an issue is another story.....