Twenty one year old Naomi Oni claims to have suffered burns and lost her hair and eyelashes after the chemical was thrown at her in Dagenham last December.
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The robbers casually approached their victim on a busy high street before before spraying a noxious substance in his face.
Tencho Hristov ignored warnings and got trapped between barriers at Roydon in Essex.
The 6km bike track will include 130m of the South Circular near Kew Bridge.