Is any of this asbestos?

It all looks like painted wallpaper to me.I don't know of any wallpaper that contains asbestos.

 

As above,
1st looks like woodchip. (look closely and you should find the brown bits are actual bits of wood) 2nd/3rd is blown vinyl. I hung the same pattern on a couple of my ceilings back in the 80's, easy strip too if I recall.

 

No worries exactly as teabreak has already said.

 

Painted wood chip once you get behind it, can come off in huge sheets - the only thing to watch is that some of flakes that come off are like razor blades

 

Wear mask when removing it.

 

No, dry dusty plaster dust, fine paper particles,etc are no good in your lungs!
And wear safety specs.

 

my treatment of this stuff is simple ... Get one of those big scrapers and just use brute force to scrape as much of the cover off as you can .. it should come off in decent strips (dont score the paper or any of that ****) then just soak whats left behind and it will peel off clean as a whistle ...

 

Try to get back to plaster if you can, I have just had a similar job at home. Blasted gloss green paint up to dado level. Some came off OK with a steamer but one wall I had to use chemical stripper!