The Politics of Doctor Who

Well, I'm interested anyway:

In general, we noticed the Doctor is more likely to overthrow the government on alien planets, or in the distant future. When he visits present-day Earth or our history, he's an arch-conservative. (He ousts Harriet Jones as prime minister of England in "The Christmas Invasion," but that's not the same as destroying the whole government.) Also, the Doctor acted out way more during the Thatcher era than any other period. During the Blair/Gordon Brown eras, he's been quite well-behaved.