What to do after an accident? This morning I almost witnessed an accident. I was a couple of hundred metres behind the incident but arrived at the scene when a pedestrian was picking a bike from the middle of the road, a distraught driver was parking his van and a cyclist was lying on the pavement very dazed and grazed. 

Several pedestrians stopped, one called an ambulance, the van driver put a jacket under the cyclist's head for comfort, but otherwise we didn't move him, we kept him talking, he wasn't complaining of cold. He did want to know about his bike, he was more worried about it than his bashed up leg.

But what should we have done? Did we miss out anything crucial? Do we do wrong?
The highway code has some advice on First Aid on the Road. It says:

1. Deal with danger - the cyclist was on the pavement and the van was parked, so you did this.

2. Get help - an ambulance was called, so you did this.

3. Help those involved - you didn't move the cyclist and you kept him comfortable, so you did this.

4. Provide emergency care - you don't mention what injuries the cyclist had, but it sounds like you didn't need to do this.

I don't think you missed anything crucial, assuming the cyclist didn't have serious injuries (e.g. heavy bleeding).