Future-proofing a warship by leaving room to lengthen the hull

Are modern British warship designs more future-proofed?

Yes in one unusually structural sense: they can be designed so a new hull section may be inserted amidships, though a navy must still choose to use that option.

A prepared hull break provides a structural form of growth margin beyond empty compartments or spare power. A designed line through the hull allows a ship to be cut and lengthened with a new mid-body section, creating volume for future systems. The capability is substantial, although its practical value depends on whether a navy is willing to fund and schedule such an extensive reconstruction.