In an increasingly complex and multipolar world, the Royal Navy faces a diverse and rapidly changing threat from competing adversaries. With this in mind, it requires not only complex and technologically advanced assets capable of competing in the conventional warfighting domains, but also the ability to adapt to the ever evolving picture at short notice. The RN’s response; modularity at the heart of the T26 design. To achieve that, T26 is built around a dedicated modular mission bay, capable of embarking and disembarking a range of capabilities without shoreside assistance using a Mission Bay Handling System. The aim of this paper is to explain the flexibility of the Mission Bay and associated systems and articulate how it could be utilised to meet the demands of the future while maintaining its core role as the World’s leading ASW capability. It will outline the context and concept of the T26 and its evolution from its T23 predecessor; it will investigate the philosophy behind the inclusion of the Mission Bay in the design phase, and it will outline how the stability and loading implications will be overcome to ensure safe operation of the Mission Bay system while maintaining a stable platform for weapon systems and aircraft operation, both key to its fundamental role as an Anti-Submarine platform. Finally, it will conclude by presenting the options and opportunities that the mission bay enables. It is intended this paper will demonstrate the increased flexibility and lethality that T26 modularisation brings to the heart of the front line and the Royal Navy’s commitment to achieving greater effect from fewer platforms; a lean and mean solution.