Contents
IOCCO’s Role

1

Communications Data

3

Communications Data legislation

3

National Anti-Fraud Network

5

Statistics

6

Inspection Regime

13

Inspection Findings and Recommendations

14

Principal Recommendations and Key Issues

15

Communications Data Errors

17

Error Statistics

17

Serious Error Investigations

18

Summary of Serious Investigations

20

Errors

21

IP Address Resolution Errors

21

Bulk Communications Data

25

Bulk Communications Data

26

Update to my review report

26

Applications for section 94 directions

27

Access to the bulk communications data retained by the agency

28

Errors

30

Interception of Communications

32

Applications for Interception Warrants

32

Interception Warrants

34

Statistics for Interception Warrants

38

Inspection Regime

40

Inspection Recommendations and Observations

44

Application Process

44

Changes to the GCHQ interception inspection regime

45

Interception Errors

47

Prisons

50

The Investigatory Powers Act

54

Annex A: Number of Communications

56

Annex B: Public Authorities’

62

Annex C: Prisons Inspection Scores

65

Annex D: Serious Errors

66

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