About Plessey Semiconductors
Plessey engineers the future in light. We design and build photonic devices and systems that help our customers shape the future of computing. Our work spans microLED displays and optical interconnects—technologies enabling faster, more efficient, and more scalable processing. Built on our proprietary GaN-on-Silicon platform, we combine research, IP, materials, process expertise, and manufacturing in one integrated operation. From source to signal. Every stage connected. This gives us control, precision, and the ability to take ideas from concept to scale. From our Plymouth facility, we design, test, and manufacture advanced photonic technologies with deep technical expertise and proven capability. Our approach is grounded in three values: Lead — We take ownership of complex challenges and engineer practical solutions. Grow — We develop our technology, capability, and people with intent. Trust — We deliver with consistency, transparency, and technical rigour.
