I was on taxi duty the other night turning left at a congested junction, in the rain, through Forest Gate, a populous area with typically inadequate roads and sodium street lighting. I was forcibly reminded of the issues caused by electric bikes, especially as deployed by food delivery riders. A bike in black, with a dark skinned rider wearing dark clothes and a dark hoodie, no lights. And before you say "Well, you saw him, didn't you?" I only saw him as he passed in front of me after I had started moving. About six inches in front of me, at what looked like derestricted speed.
Had there been a collision, it would have been an accident, but likely my fault as I was joining the main road. It did make me think that having some sort of identification on the delivery bag, reporting for the purpose of might be useful, if impractical.
It did make me treble check before opening my door in the road, and sure enough there was another. At least this one had a rear light. There seems to be a common belief among some that front lights aren't any practical use.