Professional, courteous while retaining a friendly atmosphere in a 2:1 interview with both a senior advisor/Team leader and an HR representative after a brief tour of the building.
The interview took place in a side office where I was queried on my prior experience, skill set and interpersonal communications' ability before a quite deep review of my CV before listening to a compliance picked (clearly fake) in job call that i was asked to find fault with based on prior experience with the role.
The whole process was succinct and professional but friendly and quite welcoming.