the default map that is used if the address look up fails is created by this code:
map.setCenter(new GLatLng(30, -98), 3);
you can change the latitude and longitude to 55.378051, -3.435973, this center the map on the UK:
map.setCenter(new GLatLng(55.378051, -3.435973), 3);
you can also modify the zoom setting:
map.setCenter(new GLatLng(55.378051, -3.435973), 7);
to zoom in a bit.