The Flower Market is an old school market in East End right outside the City in Shoreditch. Columbia Road, West of Brick Lane, is a beautiful, corky and artisty road full of little shops, from perfume shops to artists' studios to cake shops and bars.
All of these are open during the market, so you have the shops open on the sides and the vendors' stalls on both sides of the road (no need to say, the road is closed to motorized traffic). There are a few musicians playing on the street in an empty spot between vendors.
The street is packed with people who watch and buy, but it's not noisy. The flowers are beautiful and very perfumed and there are so many types, from succulents to plants to flowers to spices!
The coolest thing are the old school vendors. Everywhere you can hear the calls and yelling about prices and deals and talking about what they have. Some engage with people and others try to talk to everybody.
We spent about two hours and a half there, it was really nice and interesting. The sun made everything look even better and made the experience even more pleasant.
There were foreigners but it looked like most people were locals (or from the UK in general).