The Old Spitalfields Market is located 5 minutes from Liverpool Station and close to Brick Lane Market as well.
It has some restaurants and shops and stalls selling vintage clothing items and a few selling street food. I would say this is not the biggest market concerning food, but still has has some unique options. SUD Italia for example makes pizza napolitana inside a blue van, equipped with an actual pizza oven. There are other stalls selling Egyptian food, Turkish food, salt beef bagels and more.