Plextek Services Ltd

Plextek is an independent RF, radar and mmWave technology consultancy delivering novel concepts to deployable capability for UK security and public safety. 

With 35+ years of engineering excellence, we specialise in low SWaP-C technologies ready to scale at pace across communication systems, electronic warfare, position navigation and timing, and radar systems.

As a sovereign UK SME, our 90-strong team provides agile development from concept to production-ready systems. Our expertise addresses counter-UAS detection and tracking, perimeter security, critical national infrastructure protection, and concealed threat detection.

Core capabilities span RF and mmWave hardware design, signal processing, AI/ML integration, and antenna systems from VLF to V-band. Our ubiquitous radar enables continuous surveillance with micro-Doppler classification for small UAS in urban environments. Harmonic radar detects concealed electronics through shielding and barriers.

Proven applications include counter-UAS, urban surveillance, emergency responder navigation in GPS-denied environments, and real-time threat detection for critical infrastructure. 

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