Incorporated former EU standards for animal research severity and reporting into the Animals (Scientific Procedures) Act 1986.

These Regulations amend the Animals (Scientific Procedures) Act 1986 to incorporate and restate clinical and administrative standards formerly contained in EU legislation, specifically the Animals Directive (2010/63/EU).

They establish a domestic framework for classifying the severity of scientific procedures on animals, mandate specific reporting timelines for project summaries, and define the advisory tasks of Animal Welfare and Ethical Review Bodies.

The instrument applies to researchers, scientific establishments, and the Secretary of State across England, Wales, Scotland, and Northern Ireland.

Amended airport slot usage rules to allow airlines to return a portion of allocated capacity during 2026 without forfeiting future historic rights.

These Regulations amend the rules governing how airport slot usage is calculated for the Summer 2026 and Winter 2026/27 scheduling periods at airports in England, Wales, and Scotland.

They authorize a temporary deviation from standard 'use-it-or-lose-it' thresholds by allowing air carriers to return up to 10% of their allocated slots—in two distinct 5% phases—without those slots counting against their usage record for future entitlement.

To qualify for this alleviation, carriers must have held historic rights to the slots, provided at least 14 days' notice to passengers regarding cancellations, and confirmed they have not ceased operations at the airport.

The Regulations apply to airport slot coordinators and air carriers operating at coordinated airports.

Amended and modernized the legal framework for the trade of endangered species by introducing electronic permits and new criteria for import waivers.

This instrument updates the regulatory framework for the trade of protected wild fauna and flora in Great Britain to align with international obligations under the Convention on International Trade in Endangered Species (CITES).

It authorizes the use of electronic permit systems, establishes a process for waiving import permit requirements for certain species, and grants the Secretary of State powers to set trade restrictions and general derogations through secondary legislation.

These regulations apply to management and scientific authorities, customs officers, and any persons or businesses involved in the import, export, or commercial use of endangered species specimens.

The regulations revoked prior statutory instruments granting immunities and privileges to the North Atlantic Salmon Conservation Organization and the North-East Atlantic Fisheries Commission, effective March 31, 2027.

These Regulations formally revoke older statutory instruments from 1985, 1999, and 2001 that conferred specific immunities and privileges upon the North Atlantic Salmon Conservation Organization and the North-East Atlantic Fisheries Commission under previous European Communities law, exercising powers granted by the Retained EU Law (Revocation and Reform) Act 2023, with the revocation taking effect on March 31, 2027, to allow time for successor legislation to be enacted to maintain continuity.

Reclassified zero-emission goods vehicles up to 4,250kg into the Class 7 MOT regime and exempted them from standard drivers' hours and tachograph rules.

These Regulations modify the roadworthiness testing and operational rules for zero-emission goods vehicles weighing between 3,500kg and 4,250kg.

The instrument shifts these specific vehicles from the heavy vehicle testing regime into the Class 7 MOT system and exempts them from assimilated EU drivers' hours and tachograph requirements.

These changes apply to vehicle owners and transport undertakings in England, Wales, and Scotland, while also mandating a periodic review of the new rules every five years by the Secretary of State.

Decriminalised certain long-range flight violations and expanded the Civil Aviation Authority's discretion to grant safety exemptions starting 1 May 2026.

These Regulations amend civil aviation safety rules by broadening the Civil Aviation Authority's (CAA) power to grant exemptions and removing certain criminal penalties.

The instrument decriminalises the operation of twin-engined aeroplanes beyond threshold distances without specific ETOPS approval and replaces rigid criteria for CAA-issued exemptions with a discretionary power to impose appropriate conditions.

These changes apply to legal and natural persons subject to UK aviation safety regulations, including aircraft operators and the CAA.

Lowered the minimum age for train driving licences to 18 in Great Britain while maintaining a 20-year age limit for the Channel Tunnel zone.

These Regulations lower the minimum age for obtaining a train driving licence in Great Britain from 20 to 18 years.

While permitting younger drivers on the general rail network, the instrument prohibits anyone under 20 from driving within the British Channel Tunnel zone, which includes the tunnel itself and specific lines to Ashford International and Dollands Moor.

These rules apply to the Office of Rail and Road as the licensing authority, as well as railway undertakings and infrastructure managers who are prohibited from deploying underage drivers in the specified tunnel zone.

Removed the 'linked travel arrangement' category from consumer law and established a 14-day statutory refund right for travel organisers against third-party providers.

These Regulations amend the Package Travel and Linked Travel Arrangements Regulations 2018 to abolish the legal category of 'Linked Travel Arrangements' and expand the definition of 'package' to include services facilitated by a single trader during a single contact.

The instrument mandates that third-party service providers must refund travel organisers or retailers within 14 days of a cancellation or non-performance.

These changes apply to all package travel contracts and related travel services entered into across the United Kingdom on or after 6 April 2027.