24 February 1968: broadcast of fourth episode of The Web of Fear. Lethbridge-Stewart (*sigh*) leads a sortie to the surface but returns battered to the base as the only survivor; and the Yeti break in, with the possessed Travers.
24 February 1973: broadcast of first episode of Frontier in Space. The Doctor and Jo land on a space freighter and are accused of being Draconian spies; the freighter is attacked by Ogrons but the crew think they are Draconians.
24 February 1979: broadcast of sixth part of The Armageddon Factor, ending Season 15; last regular appearance of Mary Tamm as Romana. Princess Astra herself is the last segment of the Key to Time; the Doctor assembles it, and the Black Guardian attempts to trick him into giving it to him. But the Doctor disperses the segments across the universe again.
24 February 1984: broadcast of second part of Planet of Fire. On Sarn, the Doctor is captured by Timanov and Peri by the Master (but she escapes).
24 February 1993: broadcast of sixth part of The Ghosts of N-Space on BBC radio; final appearance of Jon Pertwee as the Third Doctor. The Doctor and Sarah enter N-Space where Sarah redeems Louisa and the Doctor defeats Vilmio, and the Brigadier’s uncle’s castle is saved.
I had seen that article and I disagree with his analysis and conclusions. The author is comparing only the 2012 districts with the previous ones, so the analysis addresses only the extra gerrymandering in the most recent boundary changes relative to previous gerrymandering, rather than the total divergence from a fair result. And he concludes that only seven seats were affected; I think the real number is at least three times that.