Altitude Angel
Altitude Angel, a Reading company founded in 2014, builds GuardianUTM, software for integrating drones safely into controlled airspace.
With 11 to 50 staff and 8.5 million US dollars raised, it sells GuardianUTM O/S to air navigation service providers and aviation authorities for national drone traffic management, GuardianUTM Enterprise to airports for automating drone flight authorisation, and the Drone Assist app to pilots. The register records no named, dated customer deployments.
No verified deployments yet
Altitude Angel is profiled in the companies register, but no deployment has been verified against published evidence. Records are added as evidence is reviewed and graded.
Products & Solutions
4 productsGuardianUTM
GuardianUTM is Altitude Angel's flagship uncrewed traffic management (UTM) platform, providing a full stack of U-space services across national airspace, airports, and local facilities.
Provides ANSPs and national aviation authorities with the infrastructure to safely integrate drone flights into controlled and uncontrolled airspace at scale, enabling BVLOS operations, U-space compliance, and commercial drone service provision without disrupting manned aviation.
- Common Information Service (CIS) providing static and dynamic geo-awareness data to all airspace users
- Strategic Conflict Resolution Service (CRS), pre-flight deconfliction of UAS plans against submitted flight plans and restricted areas
- Network Identification (NI), real-time drone tracking and identification
- Geo-awareness data provision including NOTAMs, weather, geofences and temporary restrictions
6 more features
- Digital flight authorisation workflows for drone operators (mobile and web)
- Per-flight monetisation model enabling ANSPs and airports to charge for airspace access
- Open developer platform at developers.altitudeangel.com
- Interoperable common interface for USSPs to receive static and dynamic geo-awareness data
- Acts as authorisation broker routing UAS plans to ANSP systems in real-time
- Acquired by Indra Group in January 2026 with continued operation and development
Technical specifications (1)
- Cloud SaaS. EASA U-space USSP compliant. CIS integration. REST API developer platform. Counter-UAS integration via open API.
- Part of SESAR PODIUM project (Proving Operations of Drones with Initial UTM) via LVNL deployment
- Deployed in DSNA U-Space Together pre-operational programme (France, 2020)
- Norwegian UTM system follows EU CIS technology and U-space service regulatory requirements
GuardianUTM O/S
GuardianUTM O/S (Operating System) is the ANSP-grade core of the GuardianUTM platform, designed for national aviation authorities and air navigation service providers to deliver national-scale drone traffic management and U-space services.
Provides ANSPs and national aviation authorities with a purpose-built, scalable operating system to deploy national-grade U-space and UTM services fully integrated with existing ATM facilities, replacing fragmented or manual processes.
- National-grade drone traffic management for ANSPs and aviation authorities
- Full integration with existing ATM systems and radar infrastructure
- Customisable UTM foundation service deployment
- Common Information Services (CIS) function for U-space
8 more features
- Strategic deconfliction, conformance monitoring, and capacity management
- Real-time ATCO situational awareness dashboard with manned and unmanned traffic view
- Rogue drone detection and flagging (drone ID not matching mission plan)
- Dynamic no-fly zone management (partial or total zone closure for priority traffic)
- Direct two-way communication between ATCOs and drone operators
- Open and standardised API integration for third-party UTM developers
- Available as foundation components for third-party UTM developer integration
- Deploys in over 80 countries (geofencing and data coverage)
Technical specifications (5)
- Integrates ASTERIX Category 21, 48, and 62 ATM radar data
- Supports ADS-B, UAS Remote ID, and ARROW DAA sensor fusion
- Open developer platform at developers.altitudeangel.com
- Interoperable common interface for USSPs to receive static and dynamic geo-awareness data
- Acts as authorisation broker routing UAS plans to ANSP systems in real-time
- Part of SESAR PODIUM project (Proving Operations of Drones with Initial UTM) via LVNL deployment
- Deployed in DSNA U-Space Together pre-operational programme (France, 2020)
- Norwegian UTM system follows EU CIS technology and U-space service regulatory requirements
GuardianUTM Enterprise
GuardianUTM Enterprise is a cost-effective airspace management platform designed for national, regional, and local airports and airfields.
Enables airports of all sizes to digitise and automate drone flight authorisation within their FRZ, replacing manual phone-based ATC approval processes and providing situational awareness of drone operations alongside manned traffic.
- Combined FRZ airspace view for airport ATC and operations
- Digital pre-flight and take-off authorisation workflows for drone operators
- High levels of automation with customisable access policies and approval workflows
- UTM Service Discovery via Altitude Angel developer platform for third-party integrations
4 more features
- Integration with existing airport surveillance infrastructure for enhanced aerial monitoring
- API and mobile/web application access for drone operators to request and receive flight authorisations
- Compatible with counter-UAS solutions
- Scalable to regional and local airfields as well as major international airports
Technical specifications (3)
- Cloud-based SaaS platform
- API integration with existing ATC and surveillance systems
- Supports standardised UTM Service Discovery format for global third-party submissions
Drone Assist
Drone Assist is Altitude Angel's consumer and professional drone flight planning and safety mobile application for iOS and Android.
Gives recreational and commercial drone pilots a single mobile application to check airspace restrictions, plan flights, submit authorisation requests to airports and ANSPs, monitor real-time airspace data, and report flights, reducing regulatory non-compliance and increasing safety awareness.
- Flight planning with polygon and waypoint drawing tools
- Real-time NOTAM, Temporary Flight Restriction (TFR), and No-Fly Zone display
- Ground hazard and terrain data layers
- One-tap flight authorisations at GuardianUTM-connected airports and facilities worldwide
8 more features
- Fly Now feature to instantly alert other airspace users of flight area via location-based services
- Pilot profiles and aircraft management (hours flown, airframe hours logging)
- Company operations management (multiple pilot and aircraft management)
- Advanced airspace filter controls and satellite map view
- Flight sharing on social channels
- Access to Altitude Angel Conflict Resolution Service (CRS) via Pro subscription
- Flight plans visible across all Altitude Angel UTM platforms including airport and GA pilot views
- Available in UK, Netherlands (GoDrone branding for LVNL), and Norway (Ninox Drone branding for Avinor)
Technical specifications (4)
- iOS: requires iOS 15.4 or later (iPhone, iPad, iPod touch, Apple Vision)
- Android: available on Google Play Store
- App size: 30.1 MB (iOS)
- Category: Navigation
Profile data from the Aerostack companies register; deployment records from the verified register. Evidence grades: T1 first-party confirmation, T2 credible reporting. See Our approach for how records are graded.