List of Acronyms and Abbreviations
3PD – Third Party Bulk Personal Dataset
	BPD – Bulk Personal Datasets
	CD – Communications Data
	CHIS – Covert Human Intelligence Sources
	CSA – Child Sexual Abuse
	CJEU – Court of Justice of the European Union
	DIPC – Deputy Investigatory Powers Commissioner
	DG – Director General
	DRN – Data Retention Notice
	EI – Equipment Interference
	FOIA – Freedom of Information Act 2000
	HRA – Human Rights Act
	ICRs – Internet Connection Records
	IPA 2016 – Investigatory Powers Act 2016
	IPC – Investigatory Powers Commissioner
	IPCO – Investigatory Powers Commissioner’s Office
	JC – Judicial Commissioner
	ML – Machine learning
	MOD – Ministry of Defence
	NCA – National Crime Agency
	NSN – National Security Notices
	Ofcom – Office of Communications
	PECR – The Privacy and Electronic Communications (EC Directive) Regulations 2003 (S.I. 2003/2426)
	PO – Postal Operator
	RIPA – Regulation of Investigatory Powers Act 2000
	RIP(S)A – Regulation of Investigatory Powers (Scotland) Act 2000
	TAB – Technical Advisory Board
	TCN – Technical Capability Notice
	TEI – Targeted Equipment Interference
	TXEI – Targeted Examination Equipment Interference
	TO – Telecommunications Operator
	TRO – Telecommunications Restriction Orders