Aliens of London

Rose returns home to discover that she has been missing for a whole year, although for her, it's been a couple of days. However, before she can explain her absence, a spaceship crashes into Big Ben, causing a worldwide crisis. Worse still, the Prime Minister has mysteriously disappeared... The Doctor's investigation puts him in the spotlight with the British government, as his long history of defending Earth finally catches up with him. But there are sinister goings on at 10 Downing Street, and politician Harriet Jones' quest to get some answers brings her into a brave new world... of aliens. Meanwhile, Rose finds trouble closer to home, as her past mistakes threaten to tear her family apart.