Parkwalk Advisors

Parkwalk Advisors is a London-based venture capital firm that focuses on UK technology companies with IP backing, primarily those spun out from UK universities. The firm invests across seed to growth stages, including late-stage rounds, and is stage-agnostic, aiming to support unlisted companies with freedom to operate. It concentrates on companies originating from university research, especially in Cambridge and across the UK, and targets sectors such as healthcare, energy, materials, technology, artificial intelligence, big data, life sciences, cleantech, medtech, quantum computing, and the apps ecosystem. Typical investments range from about £0.3 million to £10 million, with capital structures kept in a single share class, and the firm may provide equity or debt financings. Investments are generally planned over a three- to eight-year horizon.

Ian Broadhurst

Investor

Neil Cameron

Investor

Enrico D'Angelo

Finance Director

Cassie Doherty

Investor

Martin Glen

Investor

Past deals in Energy Storage

Cambridge GaN Devices

Series C in 2025
Cambridge GaN Devices develops gallium nitride based power devices and transistors designed to improve energy efficiency in power electronics. The company designs, creates, and commercializes GaN-based semiconductors that achieve faster switching, lower energy losses, and smaller form factors compared with traditional silicon devices while delivering higher power density. Its products are intended for applications in sectors such as renewable energy, electric vehicles, and consumer electronics, enabling compact and more efficient power conversion and energy management. The company collaborates with industry partners to drive innovation and accelerate adoption of GaN technology in the power semiconductor market.

Illumion

Seed Round in 2024
Illumion is a technology company specializing in energy storage solutions. It develops and manufactures a lab-based, real-time measurement device that provides detailed insights into energy storage processes at sub-micrometer scales. This device enables researchers to visualize and understand energy storage processes in real-time, optimize material usage, and identify performance limitations at the microscopic level, thereby accelerating battery development and enhancing energy storage efficiency and performance.

Cambridge GaN Devices

Series B in 2022
Cambridge GaN Devices develops gallium nitride based power devices and transistors designed to improve energy efficiency in power electronics. The company designs, creates, and commercializes GaN-based semiconductors that achieve faster switching, lower energy losses, and smaller form factors compared with traditional silicon devices while delivering higher power density. Its products are intended for applications in sectors such as renewable energy, electric vehicles, and consumer electronics, enabling compact and more efficient power conversion and energy management. The company collaborates with industry partners to drive innovation and accelerate adoption of GaN technology in the power semiconductor market.

Barocal

Seed Round in 2022
Barocal develops innovative cooling technology designed to meet low-carbon refrigeration needs. Its proprietary materials undergo significant thermal changes under pressure application and removal, enhancing energy efficiency and eliminating greenhouse gas warming impact in commercial food and drink refrigeration.

Cheesecake Energy

Seed Round in 2021
Cheesecake Energy develops advanced thermal and compressed air energy systems to store renewable energy from intermittent sources, providing reliable power on demand.

Nyobolt

Venture Round in 2021
Founded in 2020, Nyobolt is a UK-based company specializing in advanced battery technology for automotive applications. It focuses on developing high-power, fast-charging batteries with large energy storage capacity.

Echion Technologies

Series A in 2021
Echion Technologies, founded in 2017 and based in Cambridge, United Kingdom, specializes in developing advanced anode materials for lithium-ion (Li-ion) batteries. Their proprietary XNO® material offers faster charging times, longer lifespans, and improved safety compared to traditional options. The company targets the heavy-duty electric vehicle market, aiming to enhance efficiency and sustainability within the transportation sector by providing optimized power anode materials for cost-effective battery production.

Cambridge GaN Devices

Series A in 2021
Cambridge GaN Devices develops gallium nitride based power devices and transistors designed to improve energy efficiency in power electronics. The company designs, creates, and commercializes GaN-based semiconductors that achieve faster switching, lower energy losses, and smaller form factors compared with traditional silicon devices while delivering higher power density. Its products are intended for applications in sectors such as renewable energy, electric vehicles, and consumer electronics, enabling compact and more efficient power conversion and energy management. The company collaborates with industry partners to drive innovation and accelerate adoption of GaN technology in the power semiconductor market.

Nyobolt

Seed Round in 2020
Founded in 2020, Nyobolt is a UK-based company specializing in advanced battery technology for automotive applications. It focuses on developing high-power, fast-charging batteries with large energy storage capacity.

Ilika

Post in 2020
Ilika specializes in accelerating material development for energy and electronics applications using proprietary high-throughput techniques. Its solid-state battery technology powers miniature medical devices, industrial IoT, electric vehicles, and consumer electronics across Asia, Europe, North America, and the UK.

Echion Technologies

Series A in 2020
Echion Technologies, founded in 2017 and based in Cambridge, United Kingdom, specializes in developing advanced anode materials for lithium-ion (Li-ion) batteries. Their proprietary XNO® material offers faster charging times, longer lifespans, and improved safety compared to traditional options. The company targets the heavy-duty electric vehicle market, aiming to enhance efficiency and sustainability within the transportation sector by providing optimized power anode materials for cost-effective battery production.

Cambridge Photon Technology

Seed Round in 2020
Cambridge Photon Technology develops organic photovoltaic devices that enhance next-generation solar technology. Its innovative nanotechnology splits incoming blue and green photons into two infra-red photons, enabling efficient off-grid solar power deployment through lightweight devices.

YASA

Series C in 2019
YASA Motors Ltd. specializes in the manufacture of axial flux motors and generators tailored for electric and hybrid vehicles, as well as for various industrial applications. Established in 2009, the company produces a range of electric motors, including low-speed high-torque models and those designed for higher speed and power applications. YASA's innovative motor technology is particularly suited for sectors such as automotive, aerospace, marine, and construction equipment, where it addresses needs for traction, propulsion, and power generation. In addition to standard products, YASA offers custom motor solutions and consultancy services, which encompass electrical architecture design and thermal modeling. The company operates from its headquarters in Yarnton, United Kingdom, where it focuses on developing efficient, lightweight motors that meet the increasing global demand for reduced emissions and improved energy efficiency across multiple industries.

Cambridge GaN Devices

Seed Round in 2019
Cambridge GaN Devices develops gallium nitride based power devices and transistors designed to improve energy efficiency in power electronics. The company designs, creates, and commercializes GaN-based semiconductors that achieve faster switching, lower energy losses, and smaller form factors compared with traditional silicon devices while delivering higher power density. Its products are intended for applications in sectors such as renewable energy, electric vehicles, and consumer electronics, enabling compact and more efficient power conversion and energy management. The company collaborates with industry partners to drive innovation and accelerate adoption of GaN technology in the power semiconductor market.

Perpetuum

Venture Round in 2019
Perpetuum Ltd. is a company based in Southampton, United Kingdom, that specializes in the engineering, manufacturing, and commercialization of electromagnetic vibration harvesting micro generators. Founded in 2004 as a technology spin-off from the University of Southampton, Perpetuum has developed innovative self-powered wireless sensor solutions designed for condition monitoring in various industries, including rail, oil and gas, chemicals, and power generation. Its flagship products convert mechanical vibration into electrical energy, allowing for the operation of autonomous, maintenance-free wireless sensor nodes that transmit critical data on equipment health and performance. Perpetuum is recognized as the global leader in vibration energy harvesting, continually advancing the practical applications of this technology to enhance operational efficiency and safety in industrial environments.

Echion Technologies

Seed Round in 2018
Echion Technologies, founded in 2017 and based in Cambridge, United Kingdom, specializes in developing advanced anode materials for lithium-ion (Li-ion) batteries. Their proprietary XNO® material offers faster charging times, longer lifespans, and improved safety compared to traditional options. The company targets the heavy-duty electric vehicle market, aiming to enhance efficiency and sustainability within the transportation sector by providing optimized power anode materials for cost-effective battery production.

YASA

Venture Round in 2017
YASA Motors Ltd. specializes in the manufacture of axial flux motors and generators tailored for electric and hybrid vehicles, as well as for various industrial applications. Established in 2009, the company produces a range of electric motors, including low-speed high-torque models and those designed for higher speed and power applications. YASA's innovative motor technology is particularly suited for sectors such as automotive, aerospace, marine, and construction equipment, where it addresses needs for traction, propulsion, and power generation. In addition to standard products, YASA offers custom motor solutions and consultancy services, which encompass electrical architecture design and thermal modeling. The company operates from its headquarters in Yarnton, United Kingdom, where it focuses on developing efficient, lightweight motors that meet the increasing global demand for reduced emissions and improved energy efficiency across multiple industries.

Ilika

Post in 2016
Ilika specializes in accelerating material development for energy and electronics applications using proprietary high-throughput techniques. Its solid-state battery technology powers miniature medical devices, industrial IoT, electric vehicles, and consumer electronics across Asia, Europe, North America, and the UK.

YASA

Series C in 2016
YASA Motors Ltd. specializes in the manufacture of axial flux motors and generators tailored for electric and hybrid vehicles, as well as for various industrial applications. Established in 2009, the company produces a range of electric motors, including low-speed high-torque models and those designed for higher speed and power applications. YASA's innovative motor technology is particularly suited for sectors such as automotive, aerospace, marine, and construction equipment, where it addresses needs for traction, propulsion, and power generation. In addition to standard products, YASA offers custom motor solutions and consultancy services, which encompass electrical architecture design and thermal modeling. The company operates from its headquarters in Yarnton, United Kingdom, where it focuses on developing efficient, lightweight motors that meet the increasing global demand for reduced emissions and improved energy efficiency across multiple industries.

Perpetuum

Series C in 2014
Perpetuum Ltd. is a company based in Southampton, United Kingdom, that specializes in the engineering, manufacturing, and commercialization of electromagnetic vibration harvesting micro generators. Founded in 2004 as a technology spin-off from the University of Southampton, Perpetuum has developed innovative self-powered wireless sensor solutions designed for condition monitoring in various industries, including rail, oil and gas, chemicals, and power generation. Its flagship products convert mechanical vibration into electrical energy, allowing for the operation of autonomous, maintenance-free wireless sensor nodes that transmit critical data on equipment health and performance. Perpetuum is recognized as the global leader in vibration energy harvesting, continually advancing the practical applications of this technology to enhance operational efficiency and safety in industrial environments.

YASA

Series C in 2014
YASA Motors Ltd. specializes in the manufacture of axial flux motors and generators tailored for electric and hybrid vehicles, as well as for various industrial applications. Established in 2009, the company produces a range of electric motors, including low-speed high-torque models and those designed for higher speed and power applications. YASA's innovative motor technology is particularly suited for sectors such as automotive, aerospace, marine, and construction equipment, where it addresses needs for traction, propulsion, and power generation. In addition to standard products, YASA offers custom motor solutions and consultancy services, which encompass electrical architecture design and thermal modeling. The company operates from its headquarters in Yarnton, United Kingdom, where it focuses on developing efficient, lightweight motors that meet the increasing global demand for reduced emissions and improved energy efficiency across multiple industries.

YASA

Series B in 2012
YASA Motors Ltd. specializes in the manufacture of axial flux motors and generators tailored for electric and hybrid vehicles, as well as for various industrial applications. Established in 2009, the company produces a range of electric motors, including low-speed high-torque models and those designed for higher speed and power applications. YASA's innovative motor technology is particularly suited for sectors such as automotive, aerospace, marine, and construction equipment, where it addresses needs for traction, propulsion, and power generation. In addition to standard products, YASA offers custom motor solutions and consultancy services, which encompass electrical architecture design and thermal modeling. The company operates from its headquarters in Yarnton, United Kingdom, where it focuses on developing efficient, lightweight motors that meet the increasing global demand for reduced emissions and improved energy efficiency across multiple industries.

Acal Energy

Venture Round in 2011
Acal Energy is a developer of fuel cell systems, modules, and consumable chemicals tailored for various applications, including stationary, residential, and automotive uses that require more than 1 kW of power. The company focuses on creating innovative designs that significantly reduce costs associated with fuel cell systems while enhancing the performance of Proton Exchange Membrane (PEM) technologies. By utilizing a proprietary liquid catalyst, Acal Energy eliminates the need for platinum in conventional fuel cells, facilitating zero-emission and clean driving solutions. This advancement allows users to benefit from clean energy without the delays associated with battery recharging, thereby promoting the broader adoption of PEM fuel cell technologies in key markets.
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