Deep Space Advanced Radar Capability (DARC)
Source: gov.uk (2025-04-07)

The Ministry of Defence (MOD) is proposing to redevelop Cawdor Barracks as the UK host site for the DARC radar programme.

In December 2023 the United Kingdom, United States and Australia announced the creation of the Deep Space Advanced Radar Capability (DARC) programme. DARC will enable detection, identification, and tracking of objects in Earth orbit. The Ministry of Defence (MOD) is proposing to house the UK DARC site at the former Cawdor Barracks in Pembrokeshire and to refurbish the site to accommodate new DARC facilities.

UK Space Command: Keeping space safe, secure, and sustainable (https://www.youtube.com/watch?v=jVP1cNJQydk)

This short video contains an introduction to UK Space Command and the work that we do.

About DARC

DARC will form the cornerstone of the UK’s ability to detect, identify and track objects in Earth orbit, including satellites, space debris, and asteroids. This is essential for ensuring our continued ability to safely and securely operate space-based services. This includes satellites which are used to provide critical infrastructure support in the UK (such as coordinating emergency services, national security, weather forecasting, agriculture, environmental monitoring, and logistics support) as well as everyday user services (such as navigation, broadband internet, satellite cellular, and supply chain handling).

The use of three sites for DARC (in the UK, US and Australia) will enable 360 degree coverage of the sky at all times of day and under any weather conditions. The UK’s contribution to this project is therefore crucial to its success.

The MOD is proposing to house the main UK contribution to DARC at the Cawdor Barracks site in Pembrokeshire. This would see the site remain operational beyond the original planned closure date of 2028. The MOD proposes to invest in and refurbish the airfield site at Cawdor Barracks to accommodate DARC. DARC’s presence will provide employment and upskilling opportunities within the local community across all sectors. These will include operations and operations management, information technology and high-performance computing, HR, logistics, and facilities.

MOD proposal for the Cawdor Barracks site

All MOD projects follow a strict planning and environmental assurance process, agreed with the local Council, to ensure that proposed facilities are safe and suitable for use. Every effort will be taken to minimise the interference or impact on the local community during both construction and operations.

The MOD has already begun a comprehensive Environmental Impact Assessment for the proposed redevelopment of Cawdor Barracks. This includes a Landscape and Visual Impact Assessment to ensure that the DARC project has a minimal impact on the local skyline.

These documents will be submitted to Pembrokeshire County Council as part of the planning process. Their approval will be conditional on demonstration that DARC has met all required safety and environmental impact standards.

DARC aerial view showing a layout of the radar antennae on the disused airfield alongside the existing buildings at Cawdor Barracks. MOD Crown Copyright.

What is non-ionising radiation?

DARC will bounce radio waves off objects in space to detect, track, and characterise them.

The radio waves used by DARC are non-ionising radiation. They are not hazardous to health because they do not have enough energy to cause harmful ionisation. Radio waves are used in a wide variety of household devices including mobile phones, WiFi and GPS.

Additionally, MOD safety processes will ensure that DARC meets or exceeds international environmental and health standards for non-ionising radiation including those set by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and the World Health Organisation (WHO).

Levels of non-ionising radiation in the area surrounding the DARC site would be less than or equal to that received from using a mobile phone, presenting no danger to members of the public in the area.

Public engagement

The MOD will work with the local community and Pembrokeshire County Council throughout the planning and proposed construction, and the operations of the DARC facility.

Two public information events were held in September 2024 prior to the statutory consultation period (which will take place in 2025).

DARC Proposal at Cawdor Barracks (https://assets.publishing.service.gov.uk/media/66e7eb7ce47cfc6de429d74f/DARC_Proposal_at_Cawdor_Barracks.pdf) (PDF, 3.22 MB, 13 pages)

National Space Operations Centre (NSpOC) (https://www.youtube.com/watch?v=HXdq1sDsQc8)

This video explains how the National Space Operations Centre works to keep people and assets in the UK safe and secure.

Related information

National Space Strategy (https://www.gov.uk/government/publications/national-space-strategy) Defence Space Strategy (https://www.gov.uk/government/publications/defence-space-strategy-operationalising-the-space-domain) New deep space radar will transform UK security (https://www.gov.uk/government/news/new-deep-space-radar-will-transform-uk-security)