The SIA licenses security guards and has a complaints procedure for reporting illegal activity of their members.

Online information about how and when to complain, and complaints forms

SOCPA is the legislation that defines 'designated areas' where ordinary rights of association and protest are illegal without prior consent of the Secretary of State. Although not directly restrictive of photography, designated areas appear to be especially hazardous for photographers seeking to record events with the police failing to differentiate between protesters and reporters.

The Terrorism Act 2000 is the legislation most used to stop and search photographers in public places

The London Freelance Branch of the NUJ is collecting incident reports of conflicts between police and professional photographers. NB you do NOT have to be an NUJ member to file a report.