Hide had an overnight audience of 5.0 million viewers, a share of 24.5% of the total TV audience.
Doctor Who was fourth for the day. Its final half hour was opposite Britain's Got Talent on ITV, which was top for the day with 9.7 million watching and 43.9% share of the audience.
The BBC's talent show, The Voice, had 7.9 million watching - a large increase on the previous week. Casualty was third with 5.2 million viewers.
Final ratings will be released next week, which should see Doctor Who substantially increase its rating once those who timeshift the programme are factored in.