Freesat is a digital satellite television provider available in the United Kingdom. Freesat's free-to-air channels can be received using any standard digital satellite.
Call your provider and ask which channels you get that are this. They will tell you also on a channel guide. You may also be able to just browse through your own channels already and see.
Well to work with the discovery channel you would need to sign up. Mabe you should o on how to be on discovery channel.com. Whatever you do, dont;t give up!