Who is responsible for approving that the change in priority of the requirement for a...

The Senior Management Team, which includes the roles of the Sales, Marketing, and Finance Directors, and the Chief Executive, is typically responsible for steering the project and making decisions that reflect the overall scope and objectives of the project. They would be the appropriate body to approve changes in the project scope as represented in the Prioritised Requirements List, especially for a requirement that has legal and safety implications, such as a secondary fire exit. This team would ensure that such a change aligns with the strategic goals and compliance requirements of the project.