Plessey

Plymouth, United Kingdom Founded: 1917 • Age: 109 yrs Acquired By Haylo
Plessey is focused on developing advanced microLED display solutions.
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About Plessey

Plessey is a company based in Plymouth (United Kingdom) founded in 1917 was acquired by Haylo in August 2025. It operates as a Product-as-a-Service. Plessey offers products and services including microLED Display Solutions. Plessey operates in a competitive market with competitors including Particle, Signify, Landis+Gyr, PowerSecure and Span.IO, among others.

  • Headquarter Plymouth, United Kingdom
  • Sectors
    Business Services
    Energy & Utilities Technology
  • Phone
    *********
  • Website
    *********
  • Social
    *********
  • Legal Name Plessey Semiconductors Ltd
Operational Areas
Business Services → Facility, Security & Field Operations
Energy & Utilities → Energy Storage & Efficiency
Technology → Quantum & Emerging Technologies
Key Metrics
  • Annual Revenue
  • Net Profit
  • EBITDA
  • Latest Funding Round
    $30 M (USD), Debt – Conventional

    Jan 16, 2016

  • Investors
    Facebook

    & 4 more

  • Employee Count
    Employee Count
  • Acquired by
    Haylo

    & 2 more

    (Aug 20, 2025)

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Products & Services of Plessey

Plessey offers a comprehensive portfolio of products and services, including microLED Display Solutions. The company's diverse product and service offerings are designed to meet the evolving needs of its customers, address market demands, and provide comprehensive solutions that drive value creation and customer satisfaction across various segments and use cases.

Primary

Innovative microLED solutions are developed for advanced displays.

Funding Insights of Plessey

  • Total Funding
  • Total Rounds 3
  • Last Round Debt – Conventional — $30.0M
  • First Round

    (01 Feb 2015)

  • Investors Count 2
Date Amount Transaction Name Valuation Lead Investors Investors
Jan, 2016 Amount Debt – Conventional - Plessey Valuation

investors

Sep, 2015 Amount Grant - Plessey Valuation

investors

Feb, 2015 Amount Grant - Plessey Valuation

investors

Date Amount Transaction Name Valuation Lead Investors Investors
Jul, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Jan, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Investors in Plessey

Plessey has secured backing from 5 investors, including institutional investors. Prominent investors backing the company include Facebook, Mitel and Deutsche Bank. This diverse investor base provides strategic capital, industry expertise, and valuable network connections that support the company's growth initiatives, market expansion, and long-term value creation.

All
Institutional
Investor Description Founded Year Domain Location
Diversified banking and financial services are provided globally.
Founded Year Domain Location
Government entites focused on freedom, democracy, equality and the rule of law, promoting peace and stability
Founded Year Domain Location
Online social networking and communication services are provided globally.
Founded Year Domain Location
Investor Description Founded Year Domain Location
Single family office of Amitabh Bachchan, founder of Amitabh Bachchan Corporation or AB CORP
Founded Year Domain Location
Startup ecosystems are ignited through strategic investments by Signite Partners.
Founded Year Domain Location
Venture capital is directed toward companies in multiple sectors.
Founded Year Domain Location
Venture capital is invested in cybersecurity, fintech, and AI startups.
Founded Year Domain Location

Investments & Acquisitions by Plessey

Investments
Company Name Description Domain Location Founded Year Amount
Bionic investment advisor platform
2016
Fine Asian gourmet food is offered by an internet-first restaurant.
2016
Physical e-commerce kiosks are deployed for rural purchases in Indonesia.
2014
Fine Asian gourmet food is offered by an internet-first restaurant.
2016

Financial Statements - Plessey

Tata Steel revenue growth over time
Tata Steel profit and loss trends over time
Date Amount Transaction Name Valuation Lead Investors Investors
Jul, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Jan, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Plessey Comparisons

Employees
+
Add Comparison
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Competitors of Plessey

Plessey operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as Particle, Signify, Landis+Gyr, PowerSecure and Span.IO, among others. This competitive environment drives innovation, market differentiation, and strategic positioning as companies strive to capture market share and deliver value to their customers. Understanding the competitive dynamics is crucial for assessing market positioning, identifying growth opportunities, and navigating the challenges inherent in a competitive marketplace.

Company Name Domain Founded year HQ Location Description
domain founded_year HQ Location
IoT connectivity platform from prototype to production is developed.
domain founded_year HQ Location
Signify is recognized as a global leader in lighting solutions.
domain founded_year HQ Location
End-to-end energy management solutions are provided for utilities worldwide.
domain founded_year HQ Location
Energy efficiency and smart grid management solutions
domain founded_year HQ Location
Smart panels for home energy management are provided by Span.IO.
domain founded_year HQ Location
Automotive lighting equipment is manufactured by Osram in Germany.
Company Name Domain Founded year HQ Location Description
domain founded_year HQ Location
Multiple services are booked via an app-based platform.
domain founded_year HQ Location
On-demand services are booked through an app-based platform.
domain founded_year HQ Location
App based platform offering on demand delivery and ride-hailing services
domain founded_year HQ Location
Operates an on-demand hyperlocal delivery app for food and groceries.

Latest news on Plessey

Frequently Asked Questions about Plessey

When was Plessey founded?

Plessey was founded in 1917 and raised its 1st funding round 98 years after it was founded.

Where is Plessey located?

Plessey is headquartered in Plymouth, United Kingdom.

Who is the current CEO of Plessey?

Keith Strickland is the current CEO of Plessey.

What does Plessey do?

Plessey Semiconductors Ltd is engaged in the development of innovative microLED technology. Solutions are tailored for ARMR wearable devices, HUDs, and consumer electronic displays. The proprietary GaN-on-Silicon platform and monolithic process are utilized to deliver cutting-edge display technologies. The company operates within the semiconductor sector, emphasizing next-generation display solutions for various applications.

Who are the top competitors of Plessey?

Plessey's top competitors include Particle, Landis+Gyr and Signify.

What products or services does Plessey offer?

Plessey offers microLED Display Solutions.

Who are Plessey's investors?

Plessey has 5 investors. Key investors include Facebook, Mitel, Deutsche Bank, European Union, and Haylo.

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