The are some places where the terrain does not allow people access to the satellite. This is mainly in north of Scotland where the satellite appears lower in the sky, and there are mountains and valleys. Other areas are the mountains and north west coast of Wales, the west Pennines, and the North Devon and North Cornwall coasts.
There a quite a few places where for because of physical reasons such as large buildings or trees blocking the view, or local planning restrictions where dishes cannot be located in a suitable place. These tend to be scattered randomly across the whole of the UK.
People living in large multi-occupancy buildings such as multi-story flats where, for various reasons, it is not possible to allow each household access to a dish.
People in National Parks and other areas of Outstanding Natural Beauty or where listed building status, local covenants or local planning laws do not allow dishes to be erected.
The ITC reports that physical restrictions reduce the coverage to 98% of homes, and notes that there are 4.5 million multi-occupancy homes (20% of households).
We've had no problem with our freesat box since we bought it, but this last month we've been having between two and six hours where we can't receive any channels at all and then suddenly it is okay again. The fault can't be with our freesat box or it would be either completely without reception or on and off like a loose connection. It sounds to me as if the satellite transmission is being controlled, but who by? And, what can I do about it?