# Top 50 Telecom Startups in the United Kingdom by Funding (2026)

> The 50 best-funded telecom startups in the United Kingdom, ranked by total funding raised: $5.5B combined.

Source: https://millionrounds.com/top-lists/telecom-startups-united-kingdom (Millionrounds; every figure on the page links to its filing or article)

- 1 [**EXA Infrastructure** EXA Infrastructure is the largest dedicated digital infrastructure platform in Europe, linking North America and Asia via the Middle East.](https://millionrounds.com/company/exa-infrastructure) EXA Infrastructure is the largest dedicated digital infrastructure platform in Europe, linking North America and Asia via the Middle East. *Founded* 2021 London, United Kingdom **$1.5B** last round Oct 2025
- 2 [**Open Cosmos** Open Cosmos is a UK-based space technology company that specializes in end-to-end satellite mission services.](https://millionrounds.com/company/open-cosmos) Open Cosmos is a UK-based space technology company that specializes in end-to-end satellite mission services. *Founded* 2015 Didcot, United Kingdom **$737M** last round Oct 2026
- 3 [**Netomnia** Netomnia is a full-fibre network company.](https://millionrounds.com/company/netomnia) Netomnia is a full-fibre network company. *Founded* 2019 London, United Kingdom **$607M** last round Apr 2026
- 4 [**Community Fibre** Community Fibre is a broadband company that exclusively serves London's residents and businesses.](https://millionrounds.com/company/community-fibre) Community Fibre is a broadband company that exclusively serves London's residents and businesses. *Founded* 2013 London, United Kingdom **$519M** last round Dec 2025
- 5 [**Synthesia** Synthesia is a British multinational AI company based in London, founded in 2017.](https://millionrounds.com/company/synthesia) Synthesia is a British multinational AI company based in London, founded in 2017. *Founded* 2017 London, United Kingdom **$506M** last round Jan 2026
- 6 [**Quickline Communications** Quickline Communications provides broadband services to business, public sector, and residential customers through its wireless networks.](https://millionrounds.com/company/quickline-communications) Quickline Communications provides broadband services to business, public sector, and residential customers through its wireless networks. *Founded* 2004 Hull, United Kingdom **$187M** last round Jul 2024
- 7 [**Salience Labs** Salience Labs is a deep-tech semiconductor company based in Oxford, United Kingdom, specializing in all-optical silicon photonic solutions.](https://millionrounds.com/company/salience-labs) Salience Labs is a deep-tech semiconductor company based in Oxford, United Kingdom, specializing in all-optical silicon photonic solutions. *Founded* 2020 Oxford, United Kingdom **$169M** last round Oct 2026
- 8 [**Onecom** Onecom is an independent business telecommunications provider delivering fixed line, mobile and connectivity solutions.](https://millionrounds.com/company/onecom) Onecom is an independent business telecommunications provider delivering fixed line, mobile and connectivity solutions. *Founded* 2002 Fareham, United Kingdom **$124M** last round Jul 2019
- 9 [**Mblox** mBlox offers mobile marketing and engagement solutions that help brands reach customers via SMS campaigns and push notifications.](https://millionrounds.com/company/mblox) mBlox offers mobile marketing and engagement solutions that help brands reach customers via SMS campaigns and push notifications. *Founded* 1999 Campbell, United Kingdom **$122M** last round Jul 2014
- 10 [**Nu Quantum** Nu Quantum is a quantum technology company founded in 2018 as a spin-out from the University of Cambridge's Cavendish Laboratory.](https://millionrounds.com/company/nu-quantum) Nu Quantum is a quantum technology company founded in 2018 as a spin-out from the University of Cambridge's Cavendish Laboratory. *Founded* 2018 Cambridge, United Kingdom **$106M** last round Dec 2025
- 11 [**ALL.SPACE** ALL.SPACE has developed the 5th generation smart terminal, capable of linking with all satellites, all networks, in all orbits, all at once.](https://millionrounds.com/company/all-space) ALL.SPACE has developed the 5th generation smart terminal, capable of linking with all satellites, all networks, in all orbits, all at once. *Founded* 2013 Reading, United Kingdom **$102M** last round Oct 2024
- 12 [**AFRICA MOBILE NETWORKS** Africa Mobile Networks is finances, builds, and operates mobile network base stations in Sub-Saharan Africa region.](https://millionrounds.com/company/africa-mobile-networks) Africa Mobile Networks is finances, builds, and operates mobile network base stations in Sub-Saharan Africa region. *Founded* 2013 Milton Keynes, United Kingdom **$91M** last round Mar 2023
- 13 [**Ubiquisys** Ubiquisys is a developer of multimode LTE, 3G and Wi-Fi small cells for mobile operators and consumers.](https://millionrounds.com/company/ubiquisys) Ubiquisys is a developer of multimode LTE, 3G and Wi-Fi small cells for mobile operators and consumers. *Founded* 2004 Swindon, United Kingdom **$81M** last round Aug 2012
- 14 [**Cambridge Broadband Networks** Cambridge Broadband designs wireless back-haul and access provisions that improve telecommunication network capacity and efficiency.](https://millionrounds.com/company/cambridge-broadband-networks) Cambridge Broadband designs wireless back-haul and access provisions that improve telecommunication network capacity and efficiency. *Founded* 2000 Cambridge, United Kingdom **$63M** last round Feb 2012
- 15 [**Symbian Foundation** Symbian Foundation was a non-profit organization dedicated to the Symbian mobile operating system.](https://millionrounds.com/company/symbian-foundation) Symbian Foundation was a non-profit organization dedicated to the Symbian mobile operating system. *Founded* 2009 London, United Kingdom **$60M** last round Nov 2010
- 16 [**Lightning Fibre** Lightning Fibre is a community minded Full Fibre network.](https://millionrounds.com/company/lightning-fibre) Lightning Fibre is a community minded Full Fibre network. *Founded* 2018 United Kingdom **$50M** last round Dec 2023
- 17 [**Velocix** Velocix offers Digital Media Delivery Platforms, a CDN infrastructure solution for network service providers.](https://millionrounds.com/company/velocix) Velocix offers Digital Media Delivery Platforms, a CDN infrastructure solution for network service providers. *Founded* 2002 Cambridge, United Kingdom **$45M** last round Jan 2008
- 18 [**4th Utility** 4th Utility offers broadband ISP supplying ultrafast connectivity to homes and businesses across the UK via our own fibre optic network.](https://millionrounds.com/company/4th-utility) 4th Utility offers broadband ISP supplying ultrafast connectivity to homes and businesses across the UK via our own fibre optic network. *Founded* 2017 United Kingdom **$40M** last round Jan 2024
- 19 [**StarLeaf** StarLeaf was a UK-based provider of cloud-based video conferencing and collaboration software, founded in 2008 in Cambridge.](https://millionrounds.com/company/starleaf) StarLeaf was a UK-based provider of cloud-based video conferencing and collaboration software, founded in 2008 in Cambridge. *Founded* 2008 Watford, United Kingdom **$40M** last round Sept 2021
- 20 [**Antenova** Antenova is a technology company that specializes in designing, developing, and manufacturing high-performance integrated antennas and RF antenna modules.](https://millionrounds.com/company/antenova) Antenova is a technology company that specializes in designing, developing, and manufacturing high-performance integrated antennas and RF antenna modules. *Founded* 1999 Waterlooville, United Kingdom **$29M** last round Oct 2008
- 21 [**Narwhal Labs** Narwhal Labs.](https://millionrounds.com/company/narwhal-labs) Narwhal Labs. *Founded* 2021 Bristol, United Kingdom **$27M** last round Apr 2026
- 22 [**Sofant Technologies** Sofant Technologies offers Smart Antenna and tunable RF solutions for next generation mobile and wearable devices.](https://millionrounds.com/company/sofant-technologies) Sofant Technologies offers Smart Antenna and tunable RF solutions for next generation mobile and wearable devices. *Founded* 2011 Edinburgh, United Kingdom **$23M** last round Apr 2026
- 23 [**Zinwave** Zinwave provides the indoor cellular and public safety coverage that businesses need in a five-component, fiber-based solution that’s easy and affordable to install.](https://millionrounds.com/company/zinwave) Zinwave provides the indoor cellular and public safety coverage that businesses need in a five-component, fiber-based solution that’s easy and affordable to install. *Founded* 2002 Cambridge, United Kingdom **$21M** last round Mar 2010
- 24 [**Neul** Neul develops wireless network technology to enable the use of TV white space spectrum.](https://millionrounds.com/company/neul) Neul develops wireless network technology to enable the use of TV white space spectrum. *Founded* 2010 Cambridge, United Kingdom **$19M** last round Nov 2012
- 25 [**Archangel Lightworks** Archangel Lightworks is a private aerospace and communications company based in Oxford, UK, founded in 2017.](https://millionrounds.com/company/archangel-lightworks) Archangel Lightworks is a private aerospace and communications company based in Oxford, UK, founded in 2017. *Founded* 2017 Oxford, United Kingdom **$17M** last round Aug 2026
- 26 [**Muzicall** Muzicall is a ringback tone service provider for operators and media companies.](https://millionrounds.com/company/muzicall) Muzicall is a ringback tone service provider for operators and media companies. *Founded* 2004 London, United Kingdom **$16M** last round Feb 2010
- 27 [**PacketExchange** Global network services provider](https://millionrounds.com/company/packetexchange) Global network services provider *Founded* 2001 London, United Kingdom **$15M** last round Jul 2008
- 28 [**Peanut App** Peanut App is a social networking platform designed to connect women through all stages of motherhood.](https://millionrounds.com/company/peanut-app) Peanut App is a social networking platform designed to connect women through all stages of motherhood. *Founded* 2016 London, United Kingdom **$14M** last round Apr 2025
- 29 [**Eseye** Eseye, founded in 2007, specializes in end-to-end integrated IoT cellular connectivity solutions.](https://millionrounds.com/company/eseye) Eseye, founded in 2007, specializes in end-to-end integrated IoT cellular connectivity solutions. *Founded* 2007 Guildford, United Kingdom **$14M** last round Sept 2023
- 30 [**Social+** Empresa digital diseñada para dar a conocer y promover personas, empresas, productos, y/o servicios, en las diferentes redes sociales.](https://millionrounds.com/company/social) Empresa digital diseñada para dar a conocer y promover personas, empresas, productos, y/o servicios, en las diferentes redes sociales. *Founded* 2013 San Salvador, United Kingdom **$12M** last round Jun 2024
- 31 [**Mono Consultants** Mono Consultants provides infrastructure support services to the telecommunications industry.](https://millionrounds.com/company/mono-consultants) Mono Consultants provides infrastructure support services to the telecommunications industry. *Founded* 1997 United Kingdom **$11M** last round Feb 2014
- 32 [**Connectd** Connectd is a London-based fintech and media information services platform that connects early-stage startups, scale-ups, and investors with fractional executiv](https://millionrounds.com/company/connectd) Connectd is a London-based fintech and media information services platform that connects early-stage startups, scale-ups, and investors with fractional executiv *Founded* 2019 London, United Kingdom **$10M** last round Jul 2025
- 33 [**Sedna** Sedna is a data-driven communication platform that pushes profitability.](https://millionrounds.com/company/sedna) Sedna is a data-driven communication platform that pushes profitability. *Founded* 2017 London, United Kingdom **$10M** last round Apr 2025
- 34 [**Telecel Global Services** Telecel Global Services is a telecommunication company based in London.](https://millionrounds.com/company/telecel-global-services) Telecel Global Services is a telecommunication company based in London. *Founded* 2017 London, United Kingdom **$10M** last round Jul 2025
- 35 [**Avealto** Avealto is a UK-based telecommunications infrastructure company that specializes in high-altitude wireless platforms (WIP/HAPS).](https://millionrounds.com/company/avealto) Avealto is a UK-based telecommunications infrastructure company that specializes in high-altitude wireless platforms (WIP/HAPS). *Founded* 2013 London, United Kingdom **$9.3M** last round Dec 2025
- 36 [**Microcosm Communications** Microcosm Communications is a manufacturer of chips for comms equipment.](https://millionrounds.com/company/microcosm-communications) Microcosm Communications is a manufacturer of chips for comms equipment. *Founded* 1996 United Kingdom **$8.5M** last round Jul 1999
- 37 [**IX Wireless** IX Wireless operates their core network using national dark fiber that is lit up with DWDM technology.](https://millionrounds.com/company/ix-wireless) IX Wireless operates their core network using national dark fiber that is lit up with DWDM technology. *Founded* 2017 United Kingdom **$8.2M** last round Jun 2022
- 38 [**Lucida AI** Lucida AI is a technology company that specializes in artificial intelligence solutions for language learning and professional communication.](https://millionrounds.com/company/lucida-ai) Lucida AI is a technology company that specializes in artificial intelligence solutions for language learning and professional communication. *Founded* 2024 London, United Kingdom **$7.8M** last round Jun 2026
- 39 [**Citel Technologies** Citel Technologies is a telecommunications company that specializes in Voice over IP (VoIP) migration solutions and converged communications platforms.](https://millionrounds.com/company/citel-technologies) Citel Technologies is a telecommunications company that specializes in Voice over IP (VoIP) migration solutions and converged communications platforms. *Founded* 1996 Amherst, United Kingdom **$7.0M** last round Sept 2004
- 40 [**Orthogon Systems** Orthogon Systems manufactures highly available, highly reliable wireless Ethernet bridges that provide point-to-point broadband connections.](https://millionrounds.com/company/orthogon-systems) Orthogon Systems manufactures highly available, highly reliable wireless Ethernet bridges that provide point-to-point broadband connections. *Founded* 1999 United Kingdom **$7.0M** last round Jun 2003
- 41 [**Lumenisity** Lumenisity is developing advanced cable solutions to address the need for massive bandwidth increases in high capacity system.](https://millionrounds.com/company/lumenisity) Lumenisity is developing advanced cable solutions to address the need for massive bandwidth increases in high capacity system. *Founded* 2016 Romsey, United Kingdom **$6.9M** last round Jul 2021
- 42 [**CS Networks** CS Networks is a telecommunications company based in Belgrade, Serbia, specializing in B2B services.](https://millionrounds.com/company/cs-networks) CS Networks is a telecommunications company based in Belgrade, Serbia, specializing in B2B services. *Founded* 2010 Belgrade, United Kingdom **$6.6M** last round Feb 2013
- 43 [**Limitless Technology** Limitless Technology allows improved tracking of not only spending but includes document repository, inventory management, dashboards.](https://millionrounds.com/company/limitless-technology) Limitless Technology allows improved tracking of not only spending but includes document repository, inventory management, dashboards. *Founded* 2006 Lake Mary, United Kingdom **$6.5M** last round Apr 2019
- 44 [**Bullitt Group** Bullitt Group offers go-to-market solutions for brands that wish to extend into mobile or audio products.](https://millionrounds.com/company/bullitt-group) Bullitt Group offers go-to-market solutions for brands that wish to extend into mobile or audio products. *Founded* 2009 United Kingdom **$5.4M** last round Feb 2013
- 45 [**Honest Mobile** Honest Mobile provides mobile data network services by providing appropriate control and better notifications.](https://millionrounds.com/company/honest-mobile) Honest Mobile provides mobile data network services by providing appropriate control and better notifications. *Founded* 2019 Grantham, United Kingdom **$5.3M** last round Apr 2025
- 46 [**PlayJam** PlayJam is a bespoke software development company that creates tailored software solutions for both startups and established businesses.](https://millionrounds.com/company/playjam) PlayJam is a bespoke software development company that creates tailored software solutions for both startups and established businesses. *Founded* 1999 London, United Kingdom **$5.0M** last round Oct 2011
- 47 [**Sarantel** GPS Antennas, Bluetooth & Wlan, Mobile Phone Antennas.](https://millionrounds.com/company/sarantel) GPS Antennas, Bluetooth & Wlan, Mobile Phone Antennas. *Founded* 2000 Woodinville, United Kingdom **$4.9M** last round Feb 2003
- 48 [**CSL DualCom** CSL DualCom, based in the UK, provides dual signaling alarm systems and other security installations.](https://millionrounds.com/company/csl-dualcom) CSL DualCom, based in the UK, provides dual signaling alarm systems and other security installations. *Founded* 1996 United Kingdom **$3.7M** last round Mar 2011
- 49 [**Slashwork** Slashwork is a London-based software startup focused on enhancing workplace communication through its AI-driven platform.](https://millionrounds.com/company/slashwork) Slashwork is a London-based software startup focused on enhancing workplace communication through its AI-driven platform. *Founded* 2025 London, United Kingdom **$3.5M** last round Feb 2026
- 50 [**Veoware** Veoware provides Space satellite imagery services.](https://millionrounds.com/company/veoware) Veoware provides Space satellite imagery services. *Founded* 2016 Guilford, United Kingdom **$3.4M** last round Sept 2024

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies whose funding rounds we classed as this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

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## More telecom lists

[See all](https://millionrounds.com/top-lists?t=Telecom)

[*DE* *OF* *OC* **Telecom startups worldwide** 932 companies · $34B](https://millionrounds.com/top-lists/telecom-startups)[*OC* *L* *C* **Telecom startups in the United States** 494 companies · $19B](https://millionrounds.com/top-lists/telecom-startups-united-states)[*OF* *EI* *OC* **Telecom startups in Europe** 244 companies · $10B](https://millionrounds.com/top-lists/telecom-startups-europe)[*U* *A* *A* **Telecom startups in France** 33 companies · $269M](https://millionrounds.com/top-lists/telecom-startups-france)

## More lists for United Kingdom

[See all](https://millionrounds.com/top-lists?r=United%20Kingdom)

[*SC* *N* *F* **Startups in the United Kingdom** 8,355 companies · $79B](https://millionrounds.com/top-lists/startups-united-kingdom)[*IL* *CS* *ON* **Health startups in the United Kingdom** 1,094 companies · $17B](https://millionrounds.com/top-lists/health-startups-united-kingdom)[*N* *AA* *IL* **AI startups in the United Kingdom** 835 companies · $32B](https://millionrounds.com/top-lists/ai-startups-united-kingdom)[*C* *T* *K* **IT Services startups in the United Kingdom** 816 companies · $5.3B](https://millionrounds.com/top-lists/it-services-startups-united-kingdom)[*IL* *CS* *ON* **Healthcare startups in the United Kingdom** 608 companies · $14B](https://millionrounds.com/top-lists/healthcare-startups-united-kingdom)[*IL* *CS* *ON* **Biotech startups in the United Kingdom** 588 companies · $15B](https://millionrounds.com/top-lists/biotech-startups-united-kingdom)[*F* *FC* *R* **Financial Services startups in the United Kingdom** 472 companies · $26B](https://millionrounds.com/top-lists/financial-services-startups-united-kingdom)[*FC* *R* *C* **Fintech startups in the United Kingdom** 342 companies · $23B](https://millionrounds.com/top-lists/fintech-startups-united-kingdom)