We can ONLY recommend the offical line as advised by the UKBA/Britiah Embassy for the route you take when getting your local CNI.
As Terpe has already indicated, those who follow these hear-say ways do so at their own risk. You may well be able to do that without going to the Embassy, but later on when trying to get your visa papers together it might have knock on effects. Until it becomes official and published please follow the route Terpe has linked to.