Bibliography:

News Page:

National Threat Level - Service, G.D. (2015) Terrorism and national emergencies, GOV.UK. Available at: https://www.gov.uk/terrorism-national-emergency#:~:text=Threat%20levels,-There%20are%205&text=moderate%20%2D%20an%20attack%20is%20possible%20but%20not%20likely (Accessed: 30 August 2025).