"EU GPS"
Saying Galileo GPS is like saying Dyson Hoover.
The generic term for sateliite nav systems is Global Navigation Satellite System (GNSS).
There are many such systems: GPS, Galileo, GLONAS and Beidou.
Some receivers can receive signals from more than one of these.
Some receivers can even use satellites from multiple systems in a single position solution, but one satellite from each extra set is required to fix the clock, roughly speaking.
ie. a position calculated from 5 GPS and 3 Galileo satellites is more or less equivalent to a position calculated using 7 GPS satellites.
Biting the hand that feeds IT
