Dear Ducu DC,
Re: UK
Welsh and Scottish air ambulance/ HEMS funded by government (except for Scottish charity air ambulance based in Perth - totally charity funded). England mainly charity and some receive grants. I had to look onto each individual website to find our about funding, but a list of HEMS sites can be found at
UK Emergency Aviation - UK & Ireland Air Ambulance Operations A-M
and check the updates tab on the left.
Good luck (sorry cannot help you with other info).