Time Out says
Celebrate Halloween early at this apocalyptic charity walk where you can run around town dressed like a zombie. Break out your best fake blood and white face paint so you can look the part along with the other hoards of Londoners who’ll take to streets lusting after brains. As well as getting to look silly, the walk will also give you the chance to do a little good and raise money for homeless charity Shelter from the Storm.
To take part you must register on the World Zombie Day website and the route details will be emailed to you a few days before the event.