“investigation”

1. The Air Navigation (Overseas Territories) Order 2001 SI
2. The Air Navigation (Overseas Territories) Order 2007 SI
3. The Air Navigation (Overseas Territories) Order 2013 SI
4. The Armed Forces Act 2016 (Commencement No. 3) Regulations 2019 SI
5. Automated Vehicles Act 2024 Act
6. Building Societies Act 1986 Act
7. The Civil Aviation (Investigation of Air Accidents and Incidents) (Jersey) Order 2000 SI
8. The Civil Aviation (Investigation of Air Accidents and Incidents) Regulations 2018 SI
9. The Civil Aviation (Investigation of Military Air Accidents at Civil Aerodromes) Regulations 2005 SI
10. Civil Partnership Act 2004 Act 3 definitions
11. The Commission for Health Improvement (Functions) Regulations 2000 SI
12. The Commission for Health Improvement (Functions) Regulations 2003 SI
13. Commission Regulation (EU) No 1178/2011 of 3 November 2011 laying down technical requirements and administrative procedures related to civil aviation aircrew pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council (Text with EEA relevance) EU regulation
14. Commissioner for Older People (Wales) Act 2006 Act
15. Competition Act 1998 Act
16. The Competition (Amendment etc.) (EU Exit) Regulations 2019 SI
17. Coroners and Justice Act 2009 Act 2 definitions
18. The Coroners (Investigations) Regulations 2013 SI
19. The Cremation (England and Wales) Regulations 2008 SI
20. The Criminal Defence Service (Provisional Representation Orders) Regulations 2009 SI
21. The Digital Markets, Competition and Consumers Act 2024 (CMA Consumer Enforcement Rules) Regulations 2025 SI
22. The Electricity and Gas (Market Integrity and Transparency) (Enforcement etc.) Regulations 2013 SI
23. Friendly Societies Act 1992 Act
24. Health and Care Act 2022 Act
25. Immigration Act 2014 Act 2 definitions
26. Marriage Act 1949 Act
27. Marriage (Scotland) Act 1977 Act
28. The National Health Service (Performers Lists) (England) Regulations 2013 SI
29. Northern Ireland Troubles (Legacy and Reconciliation) Act 2023 Act
30. The Police and Criminal Evidence Act 1984 and the Criminal Justice and Public Order Act 1994 (Application to Food Crime Officers) Regulations 2025 SI
31. Public Services Ombudsman (Wales) Act 2005 Act
32. The Railways and Other Guided Transport Systems (Safety) Regulations 2006 SI
33. The Referral of Proposed Marriages and Civil Partnerships Regulations 2015 SI
34. The Sham Marriage and Civil Partnership (Scotland and Northern Ireland) (Administrative) Regulations 2015 SI
35. The Spaceflight Activities (Investigation of Spaceflight Accidents) Regulations 2021 SI
36. The Trade Remedies (Dumping and Subsidisation) (EU Exit) Regulations 2019 SI
37. The Trade Remedies (Increase in Imports Causing Serious Injury to UK Producers) (EU Exit) Regulations 2019 SI
38. Treasure Act 1996 Act

Definitions are taken from the instruments as published on zoomLaw, for guidance only. Check the instrument itself for its scope and any amendments.