The Camden Markets are a number of adjoining large markets in Camden Town near the Hampstead Road Lock of the Regent's Canal (which is usually called Camden Lock), often called collectively 'Camden Market' or 'Camden Lock'. The stalls sell crafts, clothing, bric-a-brac, fast food, and other things (...) (from Wikipedia).
The Camden Town marketplace is one of the largest in London and offers mainly fashionable clothes and jewelry. In its northernmost part a lot of antiques, artifacts from Asia, rugs, furniture and fifty year old clothing are sold.
Address: Camden High St. – Chalk Farm Rd.
Underground station: Camden Town.
Saturdays and Sundays between 10 am and 3 pm are the busiest and most interesting times to visit.