That borough is Southwark, with 267,818 potential zombies roaming the streets from its 26 cemeteries. This is the second highest zombies per square kilometre, with over 8,950. It's not the only London spot to make the list. Kensington and Chelsea doesn't fare much better, with just over 200,000 total undead, and 16173.16 for every square kilometre.more