Anyone I hold up like this gets a wave of acknowledgment/thanks once they are able to overtake me.
Some cyclists need to drop the victim mentality that seems to be prevalent at the moment.
I ride my bicycle the way i was taught to ride a motorbike, i make eye contact with drivers waiting to pull out at junctions....sometimes i'll take the initiative and wave the driver out ahead of me, it gives a good impression of cyclists and from a safety point of view that car is now in front of me where i can see it and it wont have to overtake me.
I'll raise a hand to thank drivers that leave me plenty of room when overtaking....obviously they are supposed to do this anyway but thats not the point, they dont all drive to the standards laid down in the highway code so some positive reinforcement and a show of my appreciation is hopefully something they'll remember.
I do shoulder checks like i'm on my motorbike, if it looks like i'll get sandwiched between parked cars and cars wanting to overtake me i'll shoulder check, perhaps signal my intent to take the crown of the road or just slow slightly so the car behind passes me before we get to the parked cars.....its not 'giving in' as some people seem to be obsessed with on here, its being safe....i'm sounding like a stuck record but in a car vs bicycle situation who will come off worse?....i want to get home at the end of a ride, not be sat in A&E nursing injuries but content in the knowledge that i had right of way or some other trivial nonsense.