Yep, I have to agree Rythm Thief. If they're bad cyclists to begin with then theres the problem right there.
I get a regular email updates from our PCs and PCSOs, its a local scheme to keep in touch with locals in these parts, a sort of electronic community policing. And sure enough, in amongst the warnings about local crime sprees and information on arrests for drug crimes, there are regular updates on cycling. And some of the advice they give out is just awful, they've got no idea. I've offered to lend them cyclecraft, but alas they've not said yes.