Blake's 7

Seven very different individuals with one common connection: they are all escaped prisoners sentenced to live out the rest of their lives on Cygnus Alpha, a barren and sparsely populated prison planet far from Earth, by a corrupt totalitarian government known as the Terran Federation. Blake, a former resistance leader who had his memories suppressed by the Federation, must now try to hold together his assorted crew of criminals and others. They have control over a very powerful, but mysterious spaceship they call the Liberator. Together they try to bring down the corrupt and tyrannical Federation.