The Government Says

Terrorism (Protection of Premises) Act 2025: notification requirement economic note

Terrorism (Protection of Premises) Act 2025: notification requirement economic note
Local copy of Economic_Note_Terrorism__Protection_of_Premises__Act__Notifications_Requirements__2026__003_.pdf

https://www.gov.uk/government/publications/terrorism-protection-of-premises-act-2025-notification-requirement-economic-note

seen at 16:42, 14 July in Policy papers and consultations.