The production team originally intended to show Jack's naked buttocks on screen. The scene was shot, but the BBC's editorial policy department stepped in and vetoed it, the only time they over-ruled the production team during the 2005 series.
When the Doctor first tries to escape from the Big Brother house, Lynda reveals that a "deadlock seal" prevents contestants from escaping. Deadlock seals are first mentioned as a barrier that the sonic screwdriver can't breach in the 1969 episode The War Games; they are referenced again later in School Reunion (2006).
The Doctor tells Lynda that he didn't pay his television licence, which she says is a capital crime. To viewers outside of the UK, this is a relatively obscure reference, referring to the annual fee levied in the UK on each active television or video recording device per household; the collected revenue is used primarily to fund the British public television service, the BBC - which produces Doctor Who (2005).
During the actual recording the director instructed the sound engineer Neil Harris to mix up the played back questions so that the actors' confusion would appear genuine.
According to Doctor Who Confidential (2005), although Anne Robinson was invited to voice the Anne Droid, the expectation was that she would decline. A celebrity voice impersonator had already been hired to record the lines when Robinson accepted.