A woman left scarred for life by an acid attack has accused the Metropolitan Police of incompetence, claiming officers initially questioned whether she had poured the liquid on herself.
Naomi Oni suffered severe burns to her face and chest when former friend Mary Konye threw sulphuric acid on her while disguised in a Muslim veil in 2012.
CCTV footage was shown in court of Konye, who was jailed last week for 12 years, following Ms Oni from her workplace to her home in Dagenham.
But Ms Oni told BBC Radio 4's Today programme officers had been slow to act and made her feel as if she had been "accused of lying" over her account of the horrific attack.
"I even got told that they watched the CCTV footage and they saw no-one following me," she said. "We've all seen the CCTV footage. There was a person in a veil following me. Why was this not found in the beginning? Nobody has answers to tell me."
Scotland Yard said they considered all lines of inquiry in the early stages of their "detailed and complex" investigation.