I have been anxiously (and pointlessly) googling the means and timing of post interview notification and keep coming across advice from job search sites suggesting you should call the business within 2 days of the interview:
"As a guideline, it's best to follow up with an email or phone call within at least two business days of the date the interview took place. Be personal. If there was something that particularly excited you about the company, let them know. This is one more chance to convince them that you're the best person for the job."
I have never heard this and as a hiring manager myself I wouldn't appreciate that call, I'm public sector so a call like this couldn't have any bearing on the interview outcome. Have you come across this? It can't be common place surely, certain sectors??