did you hold the throttle body open when doing compression test ?
on a Meriva etc ,that is key on, floor the accelerator while cranking i think
those figures are low and uneven
a tiny amount of coolant leaking into a cylinder will make a lot of steam/smoke .(headgasket fail or similar issue)
water ,coolant or oil in the exhaust from a previous issue or current issue will steam or smoke
the white smoke or steam from the header tank sounds very bad
wisps of white smoke from behind the heatshield on the manifold
blowing manifold or failed headgasket unless it's just previous spills burning off perhaps
have you checked the oil for water/coolant ? (though this does not always happen with head gasket fail etc)
is the car still under warranty of the previous repair ?