Around seventy firefighters are tackling a blaze at a factory in Greenwich
Due to the heavy smoke and sound of sirens, London Fire Brigade says it's received a number of calls from people across south east London.
The factory contains chemicals used to clean swimming pools and although it's not thought that the smoke is harmful in any way, fire chiefs are advising people in the area to keep their doors and windows closed as a precaution.
Deputy Assistant Commissioner Bernie Higgins is the Incident Commander:
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Thousands of passengers now face delays, with Southeastern trains warning "all services" would be affected.
Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
At least five people have suffered minor injuries but the cause of the blast is still unknown.