Satellite Map of London
The satellite dish can be used as an analogue wayfinding device. Similar to a compass, it always points the same direction in relation to your current position. In contrast to a compass, it doesn't point towards the magnetic pole, but in the direction of a particular satellite in the earth's orbit.
If you are in London the dishes will point towards South-South-East. The Satellite Dish Map of London takes that satellite dish as the major point of reference; South-South-East becomes the new North. With the help of this map, which is pointing towards South-South-East, dishes of London's satellite TV users will guide you the way.