Professional Circuit Designs Ltd (P-C-D) is a long-standing PCB design consultancy based in Winchester, Hampshire, offering expert PCB design services across major tool suites (Mentor, Altium, PADS, Board Station) and quality assurance via Valor NPI, ISO 9001:2015 accreditation, and secure data transfer. They support startups through full board design and library parts creation, as well as providing contract and permanent PCB design staffing, with innovative approaches like concurrent layout and mobile-PCB to boost productivity.