The Terrorism Act 2000 establishes a comprehensive framework for addressing terrorism-related activities in the UK. Key features include the definition of terrorism, the proscription of organisations, and the establishment of procedures for appeal against proscription decisions. It outlines criminal offences related to membership, support, and fund-raising for proscribed organisations, alongside provisions for the seizure and forfeiture of terrorist property. Law enforcement agencies are granted enhanced powers to investigate and detain individuals suspected of involvement in terrorism.

This legislation also includes specific provisions for Northern Ireland, establishing scheduled offences, restrictions on bail for certain individuals, and the role of the Independent Assessor of Military Complaints Procedures. The Act emphasises the importance of human rights and compliance with the European Convention on Human Rights, ensuring that counter-terrorism measures are balanced against civil liberties.