# David Leftley

> David Leftley is a seed investor at Bloc Ventures backing Internet of Things. See 11 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Bloc Ventures](https://shizune.co/investors/profile/bloc-ventures)
- Location: London, United Kingdom
- Total investments: 11
- Last investment: May 2025
- Lead investor: 64%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/david-leftley-5832a61/

David Leftley is a seed investor at Bloc Ventures in London focused on Internet of Things and Telecommunications. David has more than 30 years global technology industry experience in start-ups and multi-nationals as an engineer, manager, director and investor. From 1983 he worked as a design engineer in the defence industry, specialising in radar and airborne electronic countermeasures, first at Cossor Electronics and then at Racal Defence. In 1987 he movedinto the TV and film industry, working for Abacus Cox and then Vistek on the design of the world’s first digital TV production technology. In this time he progressed to become R&D Manager and later became General Manager. In 1996, as CTO he founded Digital Vision UK for DV AB of Sweden, a world leader in video compression, transmission and post production technology, securing contracts with the BBC, several Hollywood studios and customers as far afield as China. In 1999 DV AB successfully went to an IPO.In 2009 he joined Vodafone’s corporate venture team as head of its European activity, closing numerous investments in Mobile Health, Clean Tech, Infrastructure and Financial Tech services. In this time the fund ranked in the top 5 CVCs, achieved an IRR of 27% and in 2012 received an industry award for its exit of portfolio company Amobee for $321M. In 2010 David was ranked in Wired Magazine’s top 100 innovators’ list. He represented Vodafone on the boards of nine portfolio companies. In April 2013 David departed Vodafone to establish Bloc Ventures with Bruce.He has a Bachelor of Science (Honours) degree in Electrical and Electronic Engineering from the University of Aston Birmingham, and is a Chartered Engineer.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Internet of Things | 2 | 18% |
| Telecommunications | 2 | 18% |
| Mobile | 1 | 9% |
| Payments | 1 | 9% |
| Security | 1 | 9% |

19 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 3 | 27% |
| Series A | 2 | 18% |
| Series B | 1 | 9% |
| Funding Round | 1 | 9% |
| Debt Financing | 1 | 9% |

6 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United Kingdom | 4 | 36% |
| Belgium | 1 | 9% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| AccelerComm | AccelerComm is an exciting semiconductor IP-core company that provides solutions to accelerate the next generations of wireless communications (3GPP rel 14, rel 15 and beyond).Their technology solves the bottleneck that would otherwise limit the speed of next generation wireless communication, namely the error correction decoding that isrequired to overcome the effects of noise, interference and poor signal strength. | $15M |  | May 29, 2025 |  |
| AccelerComm | AccelerComm is an exciting semiconductor IP-core company that provides solutions to accelerate the next generations of wireless communications (3GPP rel 14, rel 15 and beyond).Their technology solves the bottleneck that would otherwise limit the speed of next generation wireless communication, namely the error correction decoding that isrequired to overcome the effects of noise, interference and poor signal strength. | $26.7M | Series B | Apr 11, 2023 |  |
| Pharrowtech | Pharrowtech designs next-generation solutions for fixed-wireless access, wireless VR/AR and ultra-high capacity wireless links. It builds on more than 12 years of top-notch R&D performed at imec, the Belgian R&D powerhouse. Leveraging deep technical expertise in algorithm, chip and antenna design for millimeter-wave systems, it createsproducts with best-in-class performance, power and cost features. | $15.6M | Series A | May 12, 2022 |  |
| AccelerComm | AccelerComm is an exciting semiconductor IP-core company that provides solutions to accelerate the next generations of wireless communications (3GPP rel 14, rel 15 and beyond).Their technology solves the bottleneck that would otherwise limit the speed of next generation wireless communication, namely the error correction decoding that isrequired to overcome the effects of noise, interference and poor signal strength. | $7.4M | Series A | Sep 21, 2020 |  |
| Zeetta Networks | Zeetta Networks spun out of the renowned High-Performance Networks Group of Bristol University in 2015 to commercialise the group’s leading Network Virtualisation & Slicing technology. Our patent-protected software technology, NetOS®, enables network operators to virtualise their networks, and then automate operations and expose the network’scapabilities in a way that cannot be done today by any of Zeetta’s competitors. We have strong market traction and engaged with world leading players, including Deutsche Telecom, Orange, BT, Colt, Facebook, and Vodafone, amongst others. Moreover, NetOS® includes a powerful Virtualization Engine which uniquely operates across different types of networks. This enables the development of “network slices” i.e. logical and isolated sub-networks which can be used like real physical networks for the development of applications. Network Virtualization enables the most efficient use of the network resources because they can be shared among many users with guaranteed Quality of Service (QoS) for each service and user. | $1.2M | Convertible Note | Jun 26, 2020 |  |
| Zeetta Networks | Zeetta Networks spun out of the renowned High-Performance Networks Group of Bristol University in 2015 to commercialise the group’s leading Network Virtualisation & Slicing technology. Our patent-protected software technology, NetOS®, enables network operators to virtualise their networks, and then automate operations and expose the network’scapabilities in a way that cannot be done today by any of Zeetta’s competitors. We have strong market traction and engaged with world leading players, including Deutsche Telecom, Orange, BT, Colt, Facebook, and Vodafone, amongst others. Moreover, NetOS® includes a powerful Virtualization Engine which uniquely operates across different types of networks. This enables the development of “network slices” i.e. logical and isolated sub-networks which can be used like real physical networks for the development of applications. Network Virtualization enables the most efficient use of the network resources because they can be shared among many users with guaranteed Quality of Service (QoS) for each service and user. | $646.5K | Convertible Note | Feb 06, 2020 |  |
| Zeetta Networks | Zeetta Networks spun out of the renowned High-Performance Networks Group of Bristol University in 2015 to commercialise the group’s leading Network Virtualisation & Slicing technology. Our patent-protected software technology, NetOS®, enables network operators to virtualise their networks, and then automate operations and expose the network’scapabilities in a way that cannot be done today by any of Zeetta’s competitors. We have strong market traction and engaged with world leading players, including Deutsche Telecom, Orange, BT, Colt, Facebook, and Vodafone, amongst others. Moreover, NetOS® includes a powerful Virtualization Engine which uniquely operates across different types of networks. This enables the development of “network slices” i.e. logical and isolated sub-networks which can be used like real physical networks for the development of applications. Network Virtualization enables the most efficient use of the network resources because they can be shared among many users with guaranteed Quality of Service (QoS) for each service and user. | $2.1M | Seed | Jul 25, 2017 |  |
| AccelerComm | AccelerComm is an exciting semiconductor IP-core company that provides solutions to accelerate the next generations of wireless communications (3GPP rel 14, rel 15 and beyond).Their technology solves the bottleneck that would otherwise limit the speed of next generation wireless communication, namely the error correction decoding that isrequired to overcome the effects of noise, interference and poor signal strength. | $3.2M | Seed |  |  |
| Paytia | Paytia is a specialist telephone payment processor. Paytia's systems allow businesses to take payment card details from their customers without putting their card data at risk over the phone. | $1.6M | Seed |  |  |
| Zeetta Networks | Zeetta Networks spun out of the renowned High-Performance Networks Group of Bristol University in 2015 to commercialise the group’s leading Network Virtualisation & Slicing technology. Our patent-protected software technology, NetOS®, enables network operators to virtualise their networks, and then automate operations and expose the network’scapabilities in a way that cannot be done today by any of Zeetta’s competitors. We have strong market traction and engaged with world leading players, including Deutsche Telecom, Orange, BT, Colt, Facebook, and Vodafone, amongst others. Moreover, NetOS® includes a powerful Virtualization Engine which uniquely operates across different types of networks. This enables the development of “network slices” i.e. logical and isolated sub-networks which can be used like real physical networks for the development of applications. Network Virtualization enables the most efficient use of the network resources because they can be shared among many users with guaranteed Quality of Service (QoS) for each service and user. | $655K | Convertible Note |  |  |

10 of 11 investments shown.

## Co-investors
- [IP Group](https://shizune.co/investors/profile/ip-group-plc) — VC Fund, 5 deals together
- [IQ Capital](https://shizune.co/investors/profile/iq-capital-partners) — VC Fund, 3 deals together
- [Breed Reply](https://shizune.co/investors/profile/breedreply) — VC Fund, 1 deal together
- [Hostplus](https://shizune.co/investors/profile/hostplus) — VC Fund, 1 deal together
- [Hostplus](https://shizune.co/investors/profile/hostplus-08ae) — VC Fund, 1 deal together
- [imec.xpand](https://shizune.co/investors/profile/imec-xpand) — VC Fund, 1 deal together

## About Bloc Ventures

VC Fund · London, United Kingdom

Bloc Ventures is an investment company focused on investments in early-stage Deep Tech companies. Pitch directly to Bloc here: https://blocventures.com/pitching/Bloc Ventures is not an investment fund, it is a company that invests in early-stage tech companies. Bloc Ventures is very much a company in the traditional sense,with a rigorous focus on governance, costs, and profit, governed by a board of directors with an operational model that enables its stakeholders to focus on building value through a longer-term collaborative and evergreen approach to early-stage tech investing.The company was founded in 2013 and is based in London, England.

5 contacts available at Bloc Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| David Leftley | Co-Founder and Managing Partner | https://shizune.co/investors/profile/david-leftley |
| Andrew Griffin | CFO | https://shizune.co/investors/profile/andrew-griffin-989e |
| Andy Green CBE | Senior Independent Director | https://shizune.co/investors/profile/andy-green-3 |
| Bruce Beckloff | co-founder and CEO | https://shizune.co/investors/profile/bruce-beckloff |
| Dimitris Stoimenou | Investment Director | https://shizune.co/investors/profile/dimitris-stoimenou |

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## FAQ

### What does David Leftley invest in?

David Leftley invests primarily in Internet of Things, Telecommunications and Mobile startups, most often at Seed and Series A stage. Most of the 11 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did David Leftley last invest?

The most recent investment recorded for David Leftley closed in May 2025. Shizune tracks 11 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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