Didcot 4, known as Urn, is the responsible for 60% of Imperial tea production. Almost all landscape is devoted to plantation farming by the local settlers, the Teasmen, who are governed by a coven of mystics called Saucerors. Notable fauna includes sun dragons, large flying predators. Big-to-enormous game hunters are advised to bring missiles.
Tea is mildly poisonous to Ghasts, who are allergic to Moral Fibre. As a result we and the several million defenceless citizens of Urn can see no reason why these man-eating aliens would want to conquer it.
We are, however, mildly concerned by the recent rise of the Crusadists, a religious sect promising to bring galactic harmony through witch-burning and pointless carnage.
We suggest that an agent is sent to Urn immediately to investigate the cult and drag out current field operative out of the casino.