John Mannell is the GGF Training Lead, specialising in technical and practical competence across the glazing sector. With a background spanning stained glass, glass processing, and commercial glazing, he has helped develop industry training programmes, technical guidance, and competency frameworks. He has contributed to initiatives covering fire-resistant glazing, regulatory compliance, construction product competence, and workforce development across the built environment. Through collaboration with industry bodies and standards-related projects, John is committed to improving skills, safety, and professional standards by translating complex technical and regulatory requirements into practical learning that enhances both individual and organisational competence.