Originally Posted by gomezz:
“In this case that may well have needed the child locks to be in use as it looked like Grayling jumped out without giving his driver any notice.”
Yes, there's nothing much the driver can do if the passenger decide to exit without warning. Usually I find the passenger says something like
I'll get out here which means I've got time to check the mirror and, as in this case, tell them to hang on if there's a cyclist coming up on the inside.