This presentation is a demonstration of the benefits of a methodology that uses the MOD Architectural Framework (MODAF) to: (i) establish candidate requirements, (ii) ensure that the stakeholders have a common view of those requirements and that there is completeness and correctness across the entire set; and (iii) encourage stakeholders to take ownership of the architecture. A real-world case study is presented that shows how the Hi-Q team and their customers have implemented the model-driven requirements methodology for business benefit.