Islington
Islington is an inner-city area of north London, England, within the wider London Borough of Islington. It is a mainly residential district of Inner London, extending from Islington's High Street to Highbury Fields and Regent's Canal, encompassing the area around the busy High Street, Upper Street, Essex Road, and Southgate Road to the east.

Islington is an inner-city area of north London, England, within the wider London Borough of Islington. It is a mainly residential district of Inner London, extending from Islington's High Street to Highbury Fields and Regent's Canal, encompassing the area around the busy High Street, Upper Street, Essex Road, and Southgate Road to the east.
Check the official site before travelling; hours and prices can change.
More markets

Borough Market
London's defining food market — go early Saturday, eat your way around the perimeter.

Columbia Road Flower Market
Sunday-only flower market in the East End — 8 a.m. for choice, 2 p.m. for prices.

Maltby Street Market
Borough's smaller, scruffier sibling — railway arches, weekend only.
Source: wiki-list