I know they were talking about how close it was going to be, with Phil Colinson saying he'd be running through London on the day of transmission. I didn't realise that was actually so close.
Doctor Who's executive producer Julie Gardner has revealed that the season finale was completed only three days before transmission.
Speaking to the Daily Telegraph, Gardner said: "For 'Journey’s End', the final episode of series four, we delivered the finished programme to the BBC the Wednesday before transmission. That’s how close to the wire it is.”
She also elaborated on the pressures of making the hit science fiction show, which will not return as a full series until 2010.
"It’s been a very intense four years,” she admitted. "Making 13 episodes of Doctor Who is a year-long job. We film from July to March. In between March and July we’re in post-production."