Beyond Visual Line of Sight: Shaping the UK Unmanned Aircraft Infrastructure

Why It Matters

A proportionate, standards‑based C2 policy removes regulatory friction, accelerating BVLOS deployments and keeping the UK competitive in the global drone market. It also safeguards airspace safety and cyber resilience as drones migrate onto commercial cellular networks.

Key Takeaways

• CAA proposes proportionate C2 standards using telecom industry guidelines.
• Public 4G/5G use limited to below 120 m altitude for safety.
• OSO 6 requires TCP/IP integrity; lower SAILs exempt from assurance.
• UAS‑specific SIMs must be compatible, not mandatory, preserving MVNO redundancy.

Pulse Analysis

The surge in demand for Beyond Visual Line of Sight (BVLOS) flights is reshaping the UK’s unmanned aircraft ecosystem. To unlock that potential, the Civil Aviation Authority (CAA) has opened a consultation on command‑and‑control (C2) link policy for operations assessed under the Specific Operational Risk Assessment (SORA) framework. By anchoring the policy in familiar telecom standards—GSMA performance methods, RTCA DO‑377 and DO‑278, and the JARUS Required Link Performance (RLP) concept—the CAA avoids reinventing the wheel and offers operators a clear, risk‑aligned pathway to certification. This approach also respects the varied risk profiles of SAIL 1‑3, ensuring low‑to‑medium risk missions are not bogged down by unnecessary paperwork.

Technology evolution is a core theme of the proposal. When the JARUS RLP was drafted, the UK relied on 2G/3G networks; today, 5G, LTE‑M, NB‑IoT, LoRaWAN, and pervasive fibre are reshaping connectivity options. The CAA’s stance is to treat the RLP as a flexible framework, allowing multi‑connection redundancy and modern low‑power links to meet performance targets. By limiting public 4G/5G usage to altitudes below 120 m (400 ft) and permitting case‑by‑case approvals for private networks, the regulator balances the need for reliable coverage with the realities of cellular architecture.

Safety and cyber‑security remain non‑negotiable. OSO 6 confirms that TCP/IP provides sufficient integrity for SAIL 1‑3, while OSO 13 introduces proportional logging and authentication requirements, scaling up to stricter controls for higher‑risk flights. The shift away from mandatory assurance at the lowest risk levels reduces barriers for innovators, yet the requirement for “compatible and appropriate” UAS‑specific SIMs preserves redundancy across mobile virtual network operators. Together, these measures position the UK to lead in autonomous aviation, offering a clear, technology‑neutral roadmap that encourages investment while protecting the airspace and data integrity.