The regulations established threshold conditions for classifying online services as Category 1, 2A and 2B under the Online Safety Act 2023, based on user numbers and functionalities.

These regulations, made under the Online Safety Act 2023, define threshold conditions for categorizing online services as Category 1, 2A, or 2B. Category 1 applies to user-to-user services exceeding certain user numbers and using content recommender systems or offering content sharing functionalities.

Category 2A applies to search engines exceeding user number thresholds except those focusing exclusively on specified topics.

Category 2B covers user-to-user services with high user numbers supporting direct messaging functionalities.

The regulations stipulate how to calculate average monthly active UK users to determine category fit and came into force the day after enactment.

The 2025 regulations amended the 2023 Product Security and Telecommunications Infrastructure Regulations by clarifying security update periods and adding exceptions for motor vehicles, two- or three-wheel vehicles, and agricultural and forestry vehicles.

These regulations amend the 2023 Product Security and Telecommunications Infrastructure Regulations.

Key changes include clarifying the required information on minimum security update periods for manufacturers and adding exceptions to the definition of 'relevant connectable products' for certain types of vehicles found in Great Britain.

The exemptions mirror existing exceptions for Northern Ireland, reflecting a commitment to regulatory alignment and alignment with international trade obligations.