Police say that a woman, who's believed to have given a bottle of bleach to a baby in Eltham, was wearing black trousers, black trainers, a long multi coloured top, a black jacket with white chevron type markings and was carrying maroon bag.
She has also been described as "a heavily built white female in her 50s with grey hair".
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The club says the decision to sack Ken Hare was "a disappointment". He had been at Roots Hall for 27 years.
The organisation wants to preserve as many signs as possible to add to their collection of protest art.
Thousands of passengers now face delays, with Southeastern trains warning "all services" would be affected.