The Air Navigation (Restriction of Flying) (Bristol) (Emergency) (No. 2) Regulations 2026

The Air Navigation (Restriction of Flying) (Bristol) (Emergency) (No. 2) Regulations 2026, a Statutory Instrument, swiftly imposed a temporary no-fly zone over the M5 Avon Bridge area in Bristol. Enacted by the Secretary of State for Transport under powers conferred by Article 239 of the Air Navigation Order 2016, these regulations prohibit aircraft from flying below 1,500 feet above mean sea level within a 1.0 nautical mile radius. This emergency measure, effective immediately upon being made on June 14, 2026, was deemed necessary due to an unspecified public interest emergency, with an explicit exemption for flights directed by Avon and Somerset Police. This article examines the legal framework underpinning such emergency airspace restrictions and their immediate implications for aviation stakeholders.

The landscape of UK airspace regulation is periodically shaped by the exigencies of public safety and national security, often manifesting in the form of emergency flying restrictions. A recent example is the enactment of The Air Navigation (Restriction of Flying) (Bristol) (Emergency) (No. 2) Regulations 2026 (S.I. 2026/634), which came into force with immediate effect on June 14, 2026. These Regulations established a temporary no-fly zone over a critical infrastructure site in Bristol, specifically around the M5 Avon Bridge.

This statutory instrument represents a direct exercise of the Secretary of State for Transport's powers to safeguard the public interest during an emergency. The imposition of such restrictions, while temporary, carries significant implications for commercial aviation, private pilots, and drone operators, necessitating a clear understanding of their legal basis and operational scope. This article will delve into the statutory authority for these emergency powers, analyse the specific provisions of the Bristol Regulations, and discuss the broader context of airspace management in the face of unforeseen events.

The authority for the Secretary of State to impose flying restrictions stems primarily from the Civil Aviation Act 1982, which provides the overarching legislative framework for civil aviation in the United Kingdom. This Act empowers the making of secondary legislation, most notably the Air Navigation Order 2016 (S.I. 2016/765). The Air Navigation Order 2016 serves as the principal instrument governing all flight operations within UK airspace, setting out comprehensive regulations concerning aviation safety, air traffic control, aircraft maintenance, and pilot licensing.

Crucially, Article 239 of the Air Navigation Order 2016 explicitly grants the Secretary of State for Transport the power to make regulations prohibiting, restricting, or imposing conditions on flight by civil aircraft in UK airspace when deemed necessary in the public interest. This power is frequently invoked in emergency situations, allowing for rapid response to incidents that could compromise public safety or hinder emergency services. Such emergency regulations are typically temporary and are intended to be revoked once the precipitating emergency has abated. The process often involves an initial establishment of a Temporary Danger Area (TDA), which, if insufficient, can be escalated to statutory Restriction of Flying Regulations, creating a Restricted Area (Temporary) (RA(T)).

The Air Navigation (Restriction of Flying) (Bristol) (Emergency) (No. 2) Regulations 2026 specifically prohibit aircraft from flying below 1,500 feet above mean sea level over a designated area. This area is defined as a circle with a 1.0 nautical mile radius centred on the M5 Avon Bridge in Bristol. The immediate commencement of these Regulations underscores the urgent nature of the underlying emergency, which the Secretary of State determined to affect the public interest. A key provision within the Regulations is the exemption for aircraft operating under the explicit directions of Avon and Somerset Police, ensuring that legitimate emergency response activities are not impeded.

The designation as "(No. 2)" indicates that these Regulations superseded or extended a previous emergency restriction. Indeed, records show that "The Air Navigation (Restriction of Flying) (Bristol) (Emergency) Regulations 2026" (without "No. 2") were made earlier in the year and subsequently revoked on May 15, 2026. Furthermore, the "(No. 2)" Regulations themselves were revoked shortly thereafter on June 16, 2026, by "The Air Navigation (Restriction of Flying) (Bristol) (Emergency) (No. 2) (Revocation) Regulations 2026." This sequence highlights the dynamic and temporary nature of such emergency airspace restrictions, which are designed to be in force only for the duration of the specific threat or incident.

The legal justification for these restrictions rests on the broad discretion granted to the Secretary of State under Article 239 of the Air Navigation Order 2016. While the specific nature of the emergency in Bristol was not detailed in the Regulations themselves, the power is typically exercised for reasons such as major public events, security threats, or incidents requiring unimpeded access for emergency services. The proportionality of such measures is a critical consideration, balancing public safety against potential disruption to legitimate air operations. The specified altitude and radius are tailored to address a localised threat, demonstrating an attempt to minimise broader impact while effectively managing the immediate emergency. The explicit exemption for police operations further reinforces the public safety rationale behind the instrument.

The Air Navigation (Restriction of Flying) (Bristol) (Emergency) (No. 2) Regulations 2026 serve as a pertinent illustration of the UK government's capacity to rapidly implement airspace restrictions in response to emergent public interest concerns. For legal practitioners advising clients in the aviation sector, these Regulations underscore the importance of continuous monitoring of statutory instruments and Notices to Airmen (NOTAMs) issued by the Civil Aviation Authority (CAA) and NATS. The temporary and often short-lived nature of such emergency measures, as evidenced by the swift revocation of both the initial and the "No. 2" Bristol Regulations, demands immediate attention and compliance from all airspace users.

Practitioners should advise airlines, private pilots, and drone operators to have robust internal procedures for identifying and responding to emergency airspace restrictions. Understanding the underlying powers granted by the Civil Aviation Act 1982 and the Air Navigation Order 2016 is crucial for assessing the legality and scope of such restrictions. While the specific emergency prompting these Bristol Regulations remains undisclosed, their enactment and subsequent revocation highlight the agility of the regulatory framework in prioritising public safety and security within UK airspace.