DO N'T GO FOR ECOS!!
We did and i really regret it.
I got their soft sheen stuff for our dining room, and a month later it was peeling off the walls - it's really dubious eco-wise anyway, I've since been told, and it's TERRIBLE paint! The matt emulsion is a little less terrible.
Have also used
Green paints white emulsion from The Green Shop - just fine, no problems, like ordinary emulsion
Green paints gloss (same place) Don't recommend, it never seems to dry completely, so marks
Earthborn Claypaint - have in kitchen/dining - doesn't wipe, so a rubbish choice near the stove, but good otherwise.
Most recently have used Womersleys paint (I think it's Aglaia paint which they then colour)
Smells extraordinary - cinnamon and clove oils.
Works fine, but you can't touch it up (you see the patches that you make, if you see what I mean)
Is unbelivevably expensive!
On varnish etc., we use the Auro Polyx oil (I think that's what it's called) Says it's eco-ish, though I'm a little dubious...