To be honest, Mercedes (even more British, as the engine's from Northampton) and Red Bull ought to do the decent thing too . As for Force India, we'll leave them alone until there's a vague chance of them getting on the top step.
Foreign money can buy the teams, but the irrefutable truth is that F1 is really a firmly British based industry (and always has been), with an occasional success by a bunch of prima-donna Italians!