Freesat, Launched as a joint venture between the ITV and BBC in May 2008 Freesat offered over 100 channels without any contract or monthly charge, just a one of payment for your receiver and satellite dish installation. Good quality Freeesat receiver can be bought for as low as £50, with an installation cost of around £80 - £120 inclusive of parts and labour.
The service is transmitted 28.2 degrees east on the astra satellite which covers the whole of the UK and many parts or mainland Europe. HDTV can also be viewed using this method by simply buying a HD receiver and a HD television, once again without any monthly subscription. This is a great option for parts of the UK that cannot obtain good Freeview reception via a standard aerial because of the local geographical terrain. (Note aerials mounted on very high masts can be very costly to install and could cause a lot of damage if blown down by high winds)
There are also a number of other satellites available to view in the UK without any monthly subscription, see lyngsat for more specific detail to identify your requirements.