Black cabs are licensed by the Public Carriage Office, http://www.tfl.gov.uk/businessandpartners/taxisandprivatehire/2807.aspx See if you can get them to match the license plate.
They only deal with customer complaints. Traffic incidents with black cabs are dealt with by the police. You need to get the cops onto your side. Request the CCTV.
@hippy started
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They only deal with customer complaints. Traffic incidents with black cabs are dealt with by the police. You need to get the cops onto your side. Request the CCTV.