One of the women, identified as DSD, was the first of Worboys' victims to make a complaint to police in 2003.
She told ITV News that she felt guilty; if police had believed her, no more women would have been sexually assaulted.
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The 47-year-old man died shortly after 3pm on Tuesday.
Specialist explosive detection dogs searched through the town examining letter boxes and phone booths for signs of potential devices.
Temperatures reached 29.1C in St James's Park, central London.