Best in my opinion is always Dulwich Sports Ground - Giant Arches Rd, off Burbage Rd. Saturday 2nd. ?10 adults under 10s free. Doors 5pm, Bonfire 6pm, Fireworks 7pm. Very busy (and you can always get food and drink during/afterwards. You must purchase tickets via eventbrite beforehand (you cannot pay on the door!!) Oh, and it says no sparklers.