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Company profile

Plessey Semiconductors Limited

Plessey - microLEDs

- Plessey

CRN
04129612
Founded
2000
Age
25

Overview

Legal name
PLESSEY SEMICONDUCTORS LIMITED
Region
South West England
Registered address
TAMERTON ROAD
ROBOROUGH
PLYMOUTH
DEVON
PL6 7BQ
Insolvency history
No

Corporate ownership

Updated 07 Jul 2026 09:49

1 level 1 ultimate controller Controls 4
1
Company Active LTD
Plessey Semiconductors Limited
CRN 04129612
2
Direct and ultimate controller Active LTD
Haylo Labs Limited
CRN 16330676

Company events

Reference milestones and recent Companies House filing stream events.

5 events
31 Mar
2027

Accounts due

Accounts Due

Next accounts due date

01 Jan
2027

Confirmation statement due

Confirmation Due

Next confirmation statement due date

18 Dec
2025

Confirmation statement filed

Confirmation

Last confirmation statement made up date

30 Jun
2025

Accounts filed

Accounts

Last accounts made up date

18 Dec
2000

Incorporated

Inception

Company registered at Companies House

Public funding

14 awards
First funded
2006
Funded years
2006, 2008, 2010, 2011, 2013, 2014, 2015, 2016, 2017, 2021
Age at first award
5 years

Projects

2021 CR&D Bilateral Lead participant

Porous InGaN for Red LEDs (PIRL)

1 Apr 2021 to 31 Mar 2023

Awarded
£137,488
Total cost £306,006
2017 Collaborative R&D

flexible Light EmittinG ElectroNics - Development of materials and process (LEGEND)

1 Sep 2017 to 31 Oct 2018

Awarded
£63,915
Total cost £106,525

Processes will be developed to produce a quantum dot based frequency modifying system for flexible light emitting sheets. New silicon based light emitting diodes will be developed with integral beam shaping and driving logic that will be integrated into a number of flexible substrates with emission spectra tailored to be compatible with the absorption cur...

2017 Collaborative R&D

Vertical cubic GaN LEDs on 150mm 3C-SiC substrates

1 Feb 2017 to 31 Jul 2018

Awarded
£151,043
Total cost £251,738

Awaiting Public Project Summary

2016 Feasibility Studies

FlexiLEDs with printed graphene based thermal management

1 May 2016 to 30 Apr 2017

Awarded
£26,977
Total cost £44,962

A new Uk based mass manufacturing technology will create flexible plastic sheets with embedded electronics and microscopic light emitting devices. High compressed graphene flakes connected to the devices will allow heat to be drawn away from the devices so they carry on working efficiently. Formed into many shapes and sizes the devices could be placed any...

2016 Procurement Lead participant

A single-arm ECG monitor using capacitive sensors and knitted electrodes

1 Feb 2016 to 31 Dec 2016

Awarded
£42,000
Total cost £42,000

Plessey Semiconductors will be developing a single-arm ECG monitor aimed primarily at sports monitoring applications, but also with uses in other fields such as home health. Using its award- winning EPIC sensor in conjunction with knitted electrodes developed by Nottingham Trent University as part of a previous Innovate UK project, an armband will be prod...

2015 Feasibility Studies

To demonstrate the potential to make low cost, high efficiency LEDs using 3C-SiC substrates

1 Oct 2015 to 31 Dec 2016

Awarded
£28,729
Total cost £47,882

The purpose of the project is to develop high efficiency, low cost GaN based LEDs on Anvil’s silicon carbide on silicon wafers (3C-SiC/Si). Anvil has recently completed an Innovate UK funded feasibility study with the University of Cambridge that demonstrated its 3C-SiC layers, developed for low cost high efficiency power devices, have an exciting applica...

2014 Feasibility Studies Lead participant

Remote knitted Electrodes for use with electrical potential sensors for automotive driver alertness

1 Jun 2014 to 28 Feb 2015

Awarded
£83,318
Total cost £111,091

The objective of this project is to enhance vehicle safety systems through the creation of an automotive driver heart-rate sensor system that produces data of sufficient quality and consistency that it can be used to monitor driver alertness and well-being. Real time analysis of such data will enable the monitoring system to take early action to prevent a...

2013 Collaborative R&D Lead participant

High Intensity Light Emitting Diodes (LEDs) for Advanced Projection Systems (HI-LEAPS)

1 Dec 2013 to 30 Nov 2015

Awarded
£191,328
Total cost £318,881

Existing light emitting diodes (LEDs) do not emit light directionally, so in many applications not all photons are coupled into the optical system and result in wasted energy. This is notably true in image projection systems (a US$3B annual market) which require bigger, much brighter LEDs to replace inefficient discharge lamps. The aim of this project is ...

2013 EU-Funded Lead participant

ENIAC/DeNeCor

1 Jun 2013 to 30 Nov 2016

Awarded
£183,169
Total cost £966,079

Awaiting Public Project Summary

2013 Collaborative R&D

Novel Electric Field Sensors for Advanced Aero-Engine Monitoring

1 Jan 2013 to 31 Jul 2015

Awarded
£237,503
Total cost £626,657

This project is developing a novel electric potential sensing technique for use in gas turbine engine monitoring. Specifically the project seeks to optimise the sensor for measurement of ultra-high temperature. This could lead to an industry first of measuring combustion exit temperature, which would have a significant impact on engine efficiency, fuel co...

2011 Collaborative R&D

Development of an Autonomous Systems Development Tool (ASDT) for application within manufacturing operations-planning

1 Sep 2011 to 28 Feb 2015

Awarded
£56,883
Total cost £192,664

This ASDT Project (Autoplan) is designed to remove the failings of existing operations planning systems in managing highly variable manufacturing environments. In such organisations the high frequency with which process and supply chain disruptions occur and changes in product design and customer demands happen, form major barriers to increasing the compe...

2010 EU-Funded Lead participant

ENIAC - CSSL

1 Feb 2010 to 31 Jan 2013

Awarded
£394,275
Total cost £1,221,053

Awaiting Public Project Summary

Product types

Collaborative R&D CR&D Bilateral EU-Funded Feasibility Studies Procurement