I would put people who assume in. For instance, when I was out with my sister (who is 9 years younger than me), we met someone my sister knew who looked at me and said to my sister 'this must be your mum'. No I'm not her b****y mum. Wait to be introduced before you speak. It ruined my day.
Last weekend, in Rutland, the first statue in Britain of the late Elizabeth II was unveiled.