Feast of St George
Time Out says
Join the Mayor of London's party in honour of St George. St George's Day started out in the thirteenth century as a national day of feasting, so look out for the live demos from leading London chefs as well as an English farmer's market and banqueting area. Family games, brass bands, a medieval jousting tiltyard and plenty more silliness will keep you entertained once you've feasted fit to burst.