Lambeth Country Show

Great free show, every summer. Lots of food stalls from Thai noodles to Jamaican jerk chicken to English sausages. Also, lots of refreshments including licenced bars. Lots of trade, health and chairty stalls for you to peruse and maybe take part. Activities for children like bouncy castles, giant slides and face painting. In other words, something for everyone. Free live shows as well.
The line-up changes a bit every year, especially the live acts, so look out for advertisments in the local paper.

A bizarre yet very fun day! To see sheep shearing in the middle of a park in Brixton is a little unnerving and made me feel a tad akin to a little evacuated Londoner seeing farm animals for the first time! But was still a very fun day: the music out on was great. Lots of delish food stalls around and chuckle head cider is amazing! Totally lethal but amazing! Can't wait for this years.

Go to this show if you like seeing middle class douchebags wearing skinny jeans, no prescription glasses and riding single-speed bikes, gather together on the same bit of lawn in Brockwell Park.
They're all so deliciously conformist in their embrace of a pseudo-hippy lifestyle, so this kind of show naturally attracts them.
Food is expensive (fiver for a burger), the grilled meat smell eventually becomes nauseating. Music ok I guess, not my type but the band put on a decent show.