This text describes how the government has been concealing the evidence of routine penetration of British airspace by rationally controlled machines from outside Earth, over which the military infrastructure has little or no control. It suggests that there is evidence that there has been an official shift in policy, and that there is a desire to disseminate to the public top secret UFO data collected over the past 50 years. Having examined the available evidence, the author is convinced that there is an active alien presence on the Earth, and that official confirmation of such a presence will soon be forthcoming.