About Us

Plessey is a privately held UK company with a strong brand and heritage in electronics innovation and proven expertise in advanced semiconductor design and manufacture. Plessey is a leading expert in the manufacture of semiconductor products used in sensing, measurement and controls applications, and is now at the forefront of the Solid State Lighting revolution. Plessey has design and technology centres in Swindon and Cambridge, and a state of the art Gallium Nitride LED semiconductor manufacturing facility in Plymouth.

Our mission statement: Enhancing the human experience
Plessey is a technology company passionate in providing intelligent electronic solutions where solid state lighting and sensing enhance the way we interact with technology, advancing peoples quality of life. Through the provision of innovative and compelling products we are committed to enabling electronic solutions such that end-users can achieve more than they thought possible.

Michael LeGoff

Michael LeGoff


Michael founded Plessey with acquisition of its Swindon assets in 2009 and has led the business since that time. Prior to Plessey, he founded Dynex Semiconductors in 1995, which was listed in 1998 (CDNX:DNX), before selling his position in 2005. Michael holds a B.Sc. degree in Physics, an MBA and is a registered professional engineer. He is also a member of the IET and the AIAA.

Keith Strickland

Dr. Keith Strickland

Cheif Technology Officer

Keith has over 15 years’ experience in senior technical roles in the semiconductor industry. He holds a B.Sc. Honours degree in Physics and Electronics, M.Sc. degree in Semiconductor Devices and a Ph.D. in Solid State Physics from the University of Lancaster in the UK. Keith has published numerous technical papers and holds two patents relating to automated IC and ESD design methodologies.

Iain Silvester

Iain Silvester

Chief Finance Officer

Iain has over 20 years’ experience in private and public growth stage technology companies. Most recently, he was CFO of picoChip Inc. and Finance Director of Motion Media PLC, where he managed its IPO on the LSE in 2000. Iain holds a B.Sc. degree in Chemistry and is a qualified Chartered Accountant with Ernst & Young where he specialised in corporate finance.

Chris Bailey

Christopher Bailey

Financial Director & Controller

Chris has over 30 years’ experience starting with AEI Semiconductors which later became known as Marconi Electronic Devices Ltd and then GEC Plessey Semiconductors. After GEC-Plessey Semiconductors was acquired by Mitel/Zarlink in 1998, he became the Finance Manager World-wide Operations in 2000. The position included responsibility for six manufacturing sites across the world and he later became the Site & Finance Director following the acquisition of the Plymouth site by XFAB in 2002. Chris holds an HND in Business Studies and qualified FCCA since 1987.

Neil Harper

Neil Harper

Product Design Director

During his 31 years in the semiconductor industry, Neil has held engineering, manufacturing, management and executive roles in the UK, Sweden and France. Neil holds an B.Sc. Honours degree in Chemistry from the University of London and a post graduate qualification in Advanced Silicon Processing and Manufacturing Technologies.

Ian Cooper

Ian Cooper

Corporate Legal Counsel

Ian has extensive experience as an in-house lawyer in the Hi-Tec sector, with over 17 years in the semiconductor industry, working for North American and British companies Ian is experienced as both a Legal Director/Manager, and as a project lawyer with broad exposure to international business including a period working in the USA and dealing with M&A, commercial contracts, IPR matters, litigation and more. He graduated in Law at LSE and worked in Private Practice as a Commercial Solicitor before joining the industry.

David Owen

David Owen

Marketing Director

David is an experienced senior manager with over 26 years in electronics and semiconductor industries where he has held various sales and marketing management positions. He joined Plessey in 2012 from Analogictech where he was Sales Director for EMEA. Prior to this, David’s roles included Director of Sales at Philips Lumileds, covering Sony Ericsson and as Lighting & Global Key Account Manager at Philips Semiconductors. He has also previously held various marketing and market sector management roles with Philips, GEC Plessey and Ferranti. David holds a honours degree in Engineering and diploma in Marketing from the Chartered Institute of Marketing.

Giuliano Cassataro

Giuliano Cassataro

LED Sales Director

Giuliano has more than 15 years’ experience in Sales and Marketing. Most recently he was the Business Development Manager for Cree Inc., covering Europe, Middle East and Africa. He holds a Diploma in Electronics, graduated in Economy and also holds an EXBA from the Politecnico University of Milano.

Myles Blake

Myles Blake

Business Systems Director

Myles has over 30 years’ of experience in the semiconductor industry, starting with Plessey Semiconductors in 1981 as a test engineer. He moved into the growing world of IT and helped guide the company through the IT evolution. He moved from software development into project management through the company's evolution. Myles was also the IT Manager at X-FAB UK, holding responsibility for all aspects of local IT as well as corporate project responsibilities. He holds a HND in Computer Studies and a diploma in Management Studies.

Mike Snaith

Mike Snaith

Operations Director

Mike has over 25 years’ experience in the semiconductor industry, joining Plessey in 1987. He is experienced as Team Leader for Photolithography, Diffusion and Films sections of Wafer Fabrication area before moving into manufacturing management role. Mike holds a diploma in Management Studies.

Pippa James

Pippa James

Human Resources Manager

Pippa has over 20 years’ experience in senior HR management with roles within the UK and New Zealand, including GEC Plessey Semiconductor, Motorola, British Aerospace and SmithKline Beecham. Pippa holds an HND in Business Studies and a post graduate Diploma in Personnel Management from the University of the West of England.

Published Papers and Articles

Please find below information that may be of interest to the press and media. At Plessey Semiconductors our engineers are committed to research and innovation. This long-standing commitment is reflected in the number of scientific, peer-reviewed publications and patent applications our engineering and development teams have generated over the years

Technology Development

  • M.C. Wilson, S. Nigrin et al. » A modular approach to the manufacture of a high performance complementary Bipolar Technology Family Proceeding of Semicon West 2004 , San Francisco, USA 13 July 2004
  • M.C. Wilson, P.Osborne et al. » A 12 Volt , 12GHz Complementary Bipolar technology for High Frequency Analogue Application Proceeding of the 32nd European Solid State Device Research Conference, Firenza, Italy 24-26 September 2002
  • S.Nigrin, P.Osborne et al. » A complementary Bipolar Technology on SOI Technology 50GHz NPN and 35 GHz PNP devices. 2002 IEEE International SOI Conference October 7-10 Williamsburg Virginia , USA
  • M.C. Wilson, P. Osborne et al. » A New High Performance Complementary Bipolar Technology Featuring 45GHz NPN and 20GHz PNP Devices Proc. SPIE Microelectronic Manufacturing 1999, pp3881-10, Santa Clara, USA
  • M.C. Wilson, P. Osborne et al. » Process HJ: A 30GHz NPN and 20 GHz PNP Complementary Bipolar Process for High Linearity RF Circuits Proc. IEEE 1998 BCTM, pp164-167, Minneapolis, USA
  • M.C. Wilson, P. Osborne et al. » A New Complementary Bipolar Process featuring a Very High Speed PNP Proc. ESSDERC 1998, pp380-383, Bordeaux, France
  • B. Martin, N. Harper: Novel resist patterning strategies for the definition of high resolution via holes in polyimide interlayer dielectric. Proc. Advances in Resist Technologies and Processing IX pp 586-596, SPIE 1992.

Measurement Technique Development

  • L. Tan, M. M. A. Hakim, S. Connor , A. Bousquet , W. Redman-White, P. Ashburn, S. Hall » Characterisation of CMOS Compatible Vertical MOSFETs with New Architectures through EKV Parameter Extraction and RF Measurement Presented at Ultimate Integration on Silicon (ULIS), Aachen, Germany, 2009
  • L. Tan, M. M. A. Hakim, S. Connor , A. Bousquet, W. Redman-White, P. Ashburn, S. Hall » Compact Model Extraction Issues of Nonstandard CMOS Compatible Vertical MOSFETs Ultimate Integration on Silicon (ULIS), Glasgow, UK, 2010
  • S.D. Connor, S.J. Harrington, A.J. Manson, S. Nigrin, S. Thomas, M.C. Wilson » Automated On-Wafer Measurement of Noise Figure and Base Spreading Resistance ICSICT 2004 Beijing China Oct 18-21 (7th International Conference on Solid State and Integrated Circuits Technology)
  • MMA Hakim, L. Tan, A Abuelgasim, K. Mallik, S. Connor, A Bousquet, C. H. de-Groot, W. Redman-White, S. Hall and P. Ashburn » Self-aligned Silicidation of Surround Gate Vertical MOSFETs for Low Cost RF Applications. Accepted in IEEE Trans. Electron. Dev. July 2010
  • S.D. Connor » Measurement of '1/f' Noise in Poly-silicon Emitter Bipolar Transistor Structures Proceedings of IEEE International Conference on Microelectronic Test Structures, pp33-38, March 153-157, 1998.
  • S.D. Connor » On Wafer Noise Measurement Using Bipolar Transistor RF Test Structures Proceedings of IEEE International Conference on Microelectronic Test Structures, pp43-48, March 17-20, 1997
  • S.D. Connor, D. Evanson » Automated Extraction of Matching Parameters for Bipolar Transistor Technologies Proceedings of IEEE International Conference on Microelectronic Test Structures, pp33-38, March 25-28, 1996

FAB Management

  • N. Harper » SMIF and Mini-Environment Technology - The Realityuture Fab International Volume 3, July 1997.


Plessey is a privately held leading and innovative electronic design and manufacturing company with a sound revenue base and ground-breaking new products projected to grow exponentially.

  • Impressive global brand with a strong technology heritage
  • Exciting and innovative products
  • Established relationship with key customers and partners
  • Experienced management team

A strong IP portfolio and research & development capabilities have produced revolutionary new products which exploit Plessey's manufacturing capabilities and sales infrastructure.

Our Quality Philosophy

Through our products and their applications Plessey Semiconductors aims to improve our customers' and end-users' quality of life. This includes meeting and exceeding customer expectations at all times.

For us, that means designing and developing products to the best of our ability and to focus on continuous innovation and improvement. We strive to enhance the quality of our products and processes, meet manufacturing schedules consistently and achieve a level of outstanding customer service.


  • ISO9001
    ISO 9001:2008

    Recognised worldwide this standard is the reference against which an organisations performance can be assessed. It ensures that Plessey Semiconductors has all the necessary processes in place to meet customer needs.


    Building on the ISO09001 standard, TS16949 contains additional requirements to meet the stringent needs of the automotive industry.

  • ISO14001

    Aligned to ISO9001, this is an environmental standard that ensures that the way we manufacture our products at Plessey Semiconductors has minimal impact on the environment. This standard is recognised worldwide.


    OHSAS18001 is a standard against which the health and safety systems and related processes within Plessey Semiconductors are assessed. It ensures that we take a high level of care of our employees and that they are not harmed whilst working within our facilities.

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Quality Documents

Title Date
 Plessey - ISO14001 Certification 29-May-2013
 Plessey - ISO9001 Certification 12-Jun-2013
 Plessey - OHS 81517 Certification 02-Sep-2014
 Plessey - RoHS Declaration of Non-use of Banned Substances 02-Sep-2014
 Quality Management System ISO/TS 16949:2009 Certificate of Registration 13-Jun-2013