28th century

In the 28th century the Earth Empire flourished. Earth had very busy air traffic. By this time, the whole of lower England had been absorbed into a megacity called Central City (DW: The Sensorites)

The Catholic Church had re-established itself and become a major space power with jurisdiction over numerous worlds. Pope John Paul XXIII was dead. (TN: Companion Piece)

Two ill-fated expeditions were sent to the planet Sense Sphere, the second headed by Captain Maitland. (DW: The Sensorites)