IHF Ltd

Integrated Human Factors (IHF) is a specialist consultancy founded by Neil Clark, applying human factors, ergonomics, and human-centred design to improve safety, performance, and usability across complex, high-consequence industries. IHF works across defence and security, transport (rail, aviation, maritime), healthcare, energy (nuclear, oil and gas), critical national infrastructure, and government. Its work sits at the intersection of human behaviour, system design, and organisational performance: where the way people work either holds a system together or becomes the point of failure. IHF's core service lines span human factors integration in systems acquisition and design, human error and reliability analysis, usability and interface evaluation, training needs analysis and competence development, and organisational and cultural assessment. The practice draws on established methodologies including HTA, HEART, and FRAM, applying them with the rigour expected in safety-critical environments and the pragmatism demanded by complex programmes. IHF also operates IHF Digital, a technology arm built around the BaselineNC predictive fatigue monitoring system, reflecting the firm's broader commitment to translating deep human factors expertise into scalable, data-driven tools.