IONX Networks and Virgin Media O2 (VMO2) have completed what is being described as a UK-first milestone in mobile infrastructure, after integrating a neutral host small cell into VMO2’s live 5G Standalone (SA) core network. The deployment, carried out on an operational network, marks a significant step in bringing shared 5G capacity closer to end-users in high-demand and hard-to-reach areas.
The development advances VMO2’s efforts to expand next-generation connectivity, with the operator continuing to focus on higher speeds, reduced latency, and improved network reliability. The integration also represents a major technical achievement for IONX, whose software-driven platform is aligned with the UK’s Joint Operator Technical Specification (JOTS) framework and also meets requirements set by leading US operators and the Federal Communications Commission.
IONX’s neutral host architecture supports both MORAN and MOCN models, offering operators a route from 4G systems to full 5GSA through shared infrastructure. The company said the approach lowers deployment costs and accelerates rollout timelines as demand for small cell infrastructure rises. As the neutral-host-as-a-service model becomes more established, IONX is positioning itself as a growing player in both the UK and US markets.
VMO2’s 5G SA network currently reaches more than 500 towns and cities, covering around 70% of the UK population. With data consumption and performance demands continuing to climb, operators are having to densify their networks and deploy infrastructure in targeted locations. Neutral host technology, which enables multiple operators to use shared equipment, is expected to play a key part in supporting capacity and coverage gains.
IONX says its platform allows operators to integrate licensed and shared spectrum through a single system, improving capacity and supporting data-heavy use cases including streaming, gaming, and industrial applications. Its small cell solution aims to fill coverage gaps and improve performance in areas where traditional macro sites are impractical.
The company also highlighted the ability of its system to support future network updates without replacing hardware. Because the platform is software-defined, operators can migrate network configurations and scale services through software changes, preparing for developments including smart city services and advanced consumer applications.
Industry analysis continues to point to neutral host expansion as a catalyst in the 5G era. A recent Small Cell Forum report stated that “Small cells play a critical role, and it is through neutral host small cells that 5G SA service delivery will truly showcase its impact.”
IONX says its model gives operators independent control, observability and security while allowing shared use of the same physical infrastructure.
Testing took place using everyday 5G devices connected to VMO2’s live 5G SA core through small cells in Marlow. The trial delivered strong results across speed, capacity and latency, while maintaining the security, visibility and traffic separation operators expect from dedicated networks.
“We’re proud to be the first to integrate our neutral host small cell platform with VMO2’s live 5G SA network,” said Jim Estes, CEO of IONX Networks. “This milestone proves that neutral host models are not just viable – they’re essential to delivering high-performance 5G where customers actually need it.”
“At Virgin Media O2, we have the largest 5GSA of any operator and are focused on bringing it to more locations through our £700m Mobile Transformation Plan” said Rob Joyce, Director of Mobile Access Engineering at Virgin Media O2. “This neutral host approach supports our mission to densify 5G in a scalable, cost-effective way — bringing the power of 5GSA to more people.”
The trial also aligns with broader industry and policy targets, including Ofcom’s shared spectrum framework aimed at improving connectivity in underserved regions. It reinforces support for MORAN and MOCN deployment models, the JOTS standard and cloud-driven interoperability for improved control and orchestration.
The companies say the work lays foundations for increased neutral host adoption as operators look to meet higher data loads and enhance user experience.
IONX and Virgin Media O2 are now preparing for next phases of deployment, with both companies stating that the initiative demonstrates that 5G SA performance gains are already achievable on shared, commercial-grade infrastructure.
