This may not be true for Mk7 halogens, but we had halogens on our Mk5, and there was an adjuster inside the headlamp housing which (though really fiddly to find) blocked off the bit of the beam that illuminates with "full beam" the verge.
Once adjusted, the beam was "dipped" fully across the road, so was suitable for use abroad too. We never bothered to adjust it back as the halogens are so good.
Maybe the Mk7 halogens have this automatically adjusting according to where the satnav thinks you are?