Contents
Subject
Page
Letter to the Prime Minister
iv
Introduction
1
Functions of the Commissioner
1
Discharge of my functions
1
The extent of interception: General
3
Safeguards
4
Communications data
4
Section 17: Exclusion of matters from legal proceedings
5
Prisons
5
Transfer of interception warrant between police forces
6
Foreign and Commonwealth Office and
Northern Ireland Office Warrants
7
The Investigatory Powers Tribunal
7
Assistance to the Tribunal
8
Rulings on Preliminary Issues of Law
8
Errors
9
Conclusion
12
Statistical Annex
13
iii