Doctor Who: The Caretaker had an Appreciation Index (AI) of 83.
The Appreciation Index or AI is a measure of how much the audience enjoyed the programme. The score, out of a hundred, is compiled by a specially selected panel of around 5,000 people who go online and rate and comment on programmes.
- Time Heist & Into the Dalek – 84
- The Caretaker – 83
- Deep Breath, Robot of Sherwood & Listen – 82