Building on the success of the three previous conferences held in 2017, 2019, and 2021 this conference will aim to draw together the considerable community of researchers and practitioners who use/develop innovative mathematics, relevant to the applications and theory of Operational Research. The conference will showcase activities from across OR, and will welcome both contributions which have a clear application focus as well as those which are theoretically driven. Contributions will be expected to showcase both Mathematics and OR. The conference will host plenaries from leading international experts, sessions of themed talks, as well as poster sessions, and provide plenty of opportunities for networking. Invited Speakers Nira Chamberlain (SNC-Lavalin Group Inc) Joerg Fliege (University of Southampton) Paul Harper (Cardiff University) Julie Bennell (University of Leeds)