You aren’t supposed to overtake through junctions for this very reason.
That’s good to know. On my road commute, I have to turn right at a place where there is often traffic behind me. I signal, look back, make sure the driver has seen me and is not intending to overtake, look back again, and again, wave a thumbs up to the driver, then turn right. Only to once have a car behind that driver not realise why things have slowed down in an apparently clear road and overtake, almost killing me.
In my mind, that impatient driver is on the wrong; what else can I do?
This situation reminds me of that