This version seems to be at least as good as the Burton one from the 1980's, which was made at much greater expense. TV movies have the room to be experimental, when they want to be. The cheap sets and black-and-white photography actually contribute to the effect, although the countryside scenes of course suffer. The actors deliver their lines with conviction, natural enough since they were closer in time to Orwell, Stalin, McCarthy and the rest.
One problem is that some of the best lines are delivered far too quickly, presumably because this was a live-on-air performance. Julia's final lines should be muttered in a halting voice, not rattled off as here.
The ratings of the various versions are 1. 1954 (Cushing) 2. 1984 (Burton) 3.1956 (which was suppressed by Orwell's estate, it was so bad). Brazil (1985) is better than any of these, because it was designed for cinema; and Orwell's novel is better than all of them.