Celestia UK
Celestia UK designs and manufactures Ka-band multi-beam phased array gateway systems for satellite communications ground segment. It serves LEO constellation operators, defence contractors and government agencies with electronically steered gateway technology replacing traditional multi-acre antenna sites.
- Company typePrivate
- Founded2005
- HeadquartersHarwell, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Celestia UK does
Celestia UK (legal entity Celestia Technologies Group, UK, registered in England and Wales) is a privately held satellite communications ground segment technology company headquartered in Edinburgh with an R&D facility in Lisbon and registered offices in London and Thame. Founded in 2005, the company operates with 11-50 employees as part of the pan-European Celestia Technologies Group alongside sister companies in Portugal, Spain and Belgium. The company designs and manufactures Ka-band antennas, compact teleport solutions, and the flagship Ka-Band Gateway — the world's first verified Ka-band gateway solution based on electronically steered (eScan) multi-beam phased array technology with no moving parts, capable of tracking up to 28-40+ satellites simultaneously and delivering 100+ Gbps throughput from a single installation on a footprint under 20m2. The technology was developed under the European Space Agency's ARTES Core Competitiveness and Sunrise Partnership Project programme with co-funding from the UK Space Agency.
The company generates revenue through two primary streams: sale of Ka-band multi-beam phased array gateway systems and satellite ground station equipment (hardware sales), and provision of satellite test systems, cryogenic systems, turnkey ground stations, and monitoring and control solutions (professional services). Go-to-market is enterprise direct sales targeting satellite constellation operators (primary), telecommunications providers, aerospace and aviation customers, autonomous transport, earth observation operators, and government and public services. Sales are conducted through direct engagement with key accounts and strategic partners, evidenced by core relationships with ESA, Eutelsat OneWeb (JoeySat test campaign), MDA Space, and the UK Space Agency, supplemented by emerging distribution into South East Asia via a partnership with Malaysia's Uzma. Validation milestones include continuous tracking of Eutelsat OneWeb's JoeySat LEO satellite and nine months of maintenance-free operation of the multi-beam gateway across varied climate conditions.
Celestia UK firmographics
Firmographics- Name
- Celestia UK
- Legal name
- Celestia Technologies Group, UK
- Website
- https://celestia-uk.com
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Celestia UK designs and manufactures Ka-band multi-beam phased array gateway systems for satellite communications ground segment. It serves LEO constellation operators, defence contractors and government agencies with electronically steered gateway technology replacing traditional multi-acre antenna sites.
- Ownership category
- akta.pro rank
Celestia UK industry classification
Industry- Product category
- Satellite Communications Ground Segment Hardware
- NAICS
- Satellite Telecommunications (51741)
- SIC
- Communications Equipment, Nec (3669), Radio & Tv Broadcasting & Communications Equipment (3663)
- akta.pro primary industry
- Satellite Ground Segment & Gateway Services (Teleports, Gateways, Ground Station-as-a-Service) (HDAIAJAH)
Keywords
Where Celestia UK is headquartered
LocationHeadquarters
- HQ city
- Harwell
- HQ country
- United Kingdom
- HQ region
- Europe
Offices4 records
Markets served
Celestia UK business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Operations, Infrastructure, Marketing or Sales
Revenue model
- Ground Segment Hardware Systems: Sale of Ka-band multi-beam phased array gateway systems and satellite ground station equipment. The company designs and delivers cutting-edge ground segment technologies including antennas, RF systems, and baseband modems
- Satellite Test Systems and Services: Provision of satellite test systems, cryogenic systems, and turnkey ground stations along with monitoring and control solutions for satellite operators
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
Celestia UK product offering
Product offeringCore offering
Celestia UK designs and delivers advanced satellite communications ground segment hardware, primarily the world's first Ka-band multi-beam phased array gateway system using proprietary eScan technology. The system tracks and communicates with up to 28-40+ LEO satellites simultaneously from a compact footprint under 20m², replacing traditional multi-acre mechanical antenna sites. The company also provides Ka-band antennas, compact teleport solutions, and satellite test systems with cryogenic and monitoring/control capabilities.
Product overview
Celestia UK offers a unified portfolio of advanced ground segment technologies for satellite communications. The core offerings include Compact Teleport Solutions and Ka-Band Antennas, anchored by the flagship Ka-Band Gateway system — the world's first verified Ka-band gateway solution featuring multi-beam phased array technology. Supporting technologies include eScan (electronically scanned phased array antenna) for LEO satellite tracking. The Multi-beam Phased Array Gateway (GWPP) won Enterprise Project of the Year in 2025. The product line delivers 100+ Gbps data throughput, tracking 28-40+ satellites simultaneously from compact rooftop installations under 20m2, replacing traditional multi-acre antenna sites.
Differentiator
Problem solved
Functional benefit
Products and services
- Ka-Band Gateway The world's first verified Ka-band multi-beam phased array gateway for satellite communications, capable of tracking and communicating with up to 28-40+ satellites simultaneously from a compact installation under 20m², delivering 100+ Gbps throughput with full 2.5 GHz instantaneous bandwidth. Designed for satellite operators, defense contractors, and government agencies requiring advanced ground segment infrastructure.
- Compact Teleport Solutions Compact ground segment solutions designed for teleport and satellite communications applications, providing integrated systems for connecting space and terrestrial networks. Targeted at teleport operators and satellite operators needing compact, multi-purpose ground station infrastructure.
- Ka-Band Antennas High-performance Ka-band antenna systems for satellite communications, including electronically steered phased array antennas capable of tracking multiple satellites simultaneously. Targeted at satellite operators and integrators requiring high-throughput Ka-band antenna hardware.
- Multi-beam Phased Array Gateway (GWPP) Multi-beam Ka-band phased array gateway system (GWPP) that streamlines ground operations, enhances automation, and increases mission efficiency. Won Enterprise Project of the Year at Strategies for Space Ground Segment Conference 2025. Targeted at satellite operators deploying LEO constellations requiring simultaneous multi-satellite ground segment capability.
- Satellite Test Systems and Turnkey Ground Stations Provision of satellite test systems, cryogenic systems, and turnkey ground stations along with monitoring and control solutions for satellite operators. Includes RF systems, baseband modems, and IoT solutions integrated into complete ground station offerings.
Quantifiable outcome
- Successfully tracks up to 28 satellites simultaneously with proven multi-beam phased array gateway
- +4 more outcomes
Companies that use Celestia UK
Customer profileNamed customers3 records
Segments6 records
Ideal customer profiles3 records
Celestia UK technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Celestia UK partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered major, core and minor.
- UzmamajorExpression of Interest signed at Space-Comm Expo Scotland 2024 for mutual collaboration on development of advanced space satellite solutions for South East Asia region. Uzma is a leader in energy and technology landscape of Malaysia. Partnership to bring cutting-edge satellite communications technology to South East Asia market.
- European Space Agency (ESA)coreESA's ARTES Core Competitiveness and Sunrise Partnership Project programme partnership for development of eScan technology and multi-beam Ka-band gateway. ESA provides funding, technical oversight and has supported the development of innovative ground segment technologies through the Sunrise Partnership Project with Celestia UK and Eutelsat OneWeb.
- Eutelsat OneWebcoreCollaboration on JoeySat LEO satellite testing demonstrating Celestia's eScan technology. Eutelsat OneWeb operates the JoeySat experimental satellite used for testing Celestia's multi-beam phased array gateway. Partnership within Sunrise Partnership Project for groundbreaking technology developments.
- MDA SpacemajorKey industry partner in the development of multi-beam Ka-band gateway technology. Collaborated under ESA Sunrise Partnership Project for constellation where high number of satellites visible from single point on earth.
- Dundee Ground StationmajorOperational partner for JoeySat satellite testing. The ground station was used for testing Celestia's multi-beam gateway when pointing to the Gateway for satellite passes.
- Scottish Development InternationalminorInternational arm of Scottish Enterprise that supported the partnership with Uzma. Organized first Space Trade Mission to Malaysia and facilitated connections with Malaysian Space Agency, MIGHT, and MIDA.
- Malaysian Space Agency (MYSA)minorGovernment space agency of Malaysia. Witnessed the signing of Expression of Interest between Celestia and Uzma. Part of Scottish Development International trade mission to Malaysia.
- Celestia Technologies GroupcoreParent pan-European supplier of innovative technology products, systems and services to space, aerospace, defence, telecommunications and scientific markets. Celestia UK is part of this group with other facilities in Lisbon, Santander, and Antwerp.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
Celestia UK competitors and assessment
Company assessmentDirect peers
- Intellian Technologies: Intellian builds a broad range of satellite communication antenna systems, including Ka-band and LEO-ready flat-panel terminals. Comparable to Celestia UK as a satcom antenna vendor targeting gateway, mobility, and enterprise satellite broadband segments.
- Kymeta Corporation: Kymeta produces flat-panel electronically steered satellite antennas for fixed and mobile broadband. Comparable to Celestia UK as a phased-array satcom hardware vendor with overlapping target applications in LEO connectivity and pursuit of ground segment miniaturization.
- Satixfy Communications: Satixfy designs satellite communication chips and full satellite terminal user terminals with electronically steered phased array technology. Comparable to Celestia UK in the Ka-band phased array satcom space, with overlapping served markets including LEO ground infrastructure and on-the-move terminals.
- ThinKom Solutions: ThinKom develops phased array and mechanically steered antenna systems for satellite communications, including Ka-band gateway and mobility applications. Directly comparable to Celestia UK as a specialist in compact, multi-beam satcom antenna hardware targeting LEO and GEO use cases.
- C-COM Satellite Systems: C-COM manufactures iNetVu mobile satellite antennas and is developing Ka-band phased array offerings for satellite broadband. Comparable to Celestia UK as a phased-array antenna specialist pursuing LEO/MEO gateway and terminal applications.
Broad incumbents
- Gilat Satellite Networks: Gilat is an established provider of satellite ground segment equipment, VSATs, and broadband solutions for defense, commercial, and mobility markets. A broad incumbent comparable to Celestia UK in the satellite ground equipment category, though with a much wider product portfolio and installed base.
- Hughes Network Systems: Hughes is a major satellite ground segment vendor supplying gateways, modems, and terminals for GEO and LEO operators including OneWeb. A broad incumbent aligned with Celestia UK's market as a competing gateway infrastructure provider and existing partner to Eutelsat OneWeb.
- Viasat: Viasat is a vertically integrated satellite operator and ground segment supplier with significant Ka-band gateway infrastructure expertise. A broad incumbent comparable to Celestia UK as it competes in the satellite ground segment space and serves defense and commercial operators.
- ST Engineering iDirect: ST Engineering iDirect supplies ground infrastructure (modems, hubs, gateways) for satellite operators across multiple orbits. A broad incumbent comparable to Celestia UK in addressing satellite ground segment needs, including emerging LEO gateway requirements.
Emerging players
- Ball Aerospace: Ball Aerospace designs advanced antenna systems and RF payloads for space and ground applications, with emerging activity in phased array gateway solutions. Comparable to Celestia UK as a high-end aerospace antenna/RF engineering peer with overlap in defense and government satcom programs.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Celestia UK social profiles
Digital presenceCelestia UK financial estimates
Financial estimateRevenue estimate
Valuation estimate
Celestia UK leadership team
Management profileNumber of profiles
Profiles5 records
Celestia UK subsidiaries and ownership
Company hierarchySubsidiaries7 records
Celestia UK funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Celestia UK M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Celestia UK
What does Celestia UK do?
Celestia UK designs and delivers advanced satellite communications ground segment hardware, primarily the world's first Ka-band multi-beam phased array gateway system using proprietary eScan technology. The system tracks and communicates with up to 28-40+ LEO satellites simultaneously from a compact footprint under 20m², replacing traditional multi-acre mechanical antenna sites. The company also provides Ka-band antennas, compact teleport solutions, and satellite test systems with cryogenic and monitoring/control capabilities.
Is Celestia UK a public or private company?
Celestia UK is a private company. It is classified as corporate owned and is currently operating.
When was Celestia UK founded?
Celestia UK was founded in 2005. It employs 11 to 50 people.
Where is Celestia UK based?
Celestia UK is headquartered in Harwell, United Kingdom, in the Europe region.
How does Celestia UK make money?
Two revenue lines are on record. Ground Segment Hardware Systems are the primary driver. The others are satellite Test Systems and Services.
Who are Celestia UK's main competitors?
Direct peers on record are Intellian Technologies, Kymeta Corporation, Satixfy Communications, ThinKom Solutions and C-COM Satellite Systems. Broad incumbents are Gilat Satellite Networks, Hughes Network Systems, Viasat and ST Engineering iDirect. Ball Aerospace is listed as an emerging player.
Does Celestia UK have an API?
No public API is recorded for Celestia UK.
What industry is Celestia UK in?
Celestia UK's product category is Satellite Communications Ground Segment Hardware. Its primary akta.pro industry code is HDAIAJAH, Satellite Ground Segment & Gateway Services (Teleports, Gateways, Ground Station-as-a-Service). Its NAICS code is 51741 and its SIC code is 3669.