They include a bin fire in Fulham and a blaze on a roundabout in Hayes.
Firefighters are asking people to attend only public organised firework events for Diwali and Bonfire night.
Deputy Assistant Commissioner Paul Askew said: “Following a busy weekend of fireworks-related calls and incidents, we’re urging Londoners to follow our advice by attending a safer, organised fireworks display this year.
“If you are going to host your own display, it’s important to ensure you are buying safe fireworks from a reputable, licensed seller with a CE safety mark. Secure them properly in the ground, and keep them far away from buildings, trees, animals and people.
“Always follow the Fireworks Code and remember there are strict laws around when you can purchase and use fireworks. Never set them off if you’ve been drinking alcohol and once a firework is lit, never go back to it.
“Disposing of fireworks safely is just as important as using them correctly. Allow fireworks to cool properly before throwing them away.
“As we approach Diwali, Halloween and Bonfire Night, we wish everyone a safe fireworks season.”
