Why the Royal Navy was unlikely to follow the LCS route

Was the Royal Navy likely to follow the American Littoral Combat Ship route?

No; British speed-focused battlecruisers were a capital-ship exception, while later Royal Navy design favored balance.

The battlecruiser tradition did not amount to a navy-wide obsession with speed. Those ships pursued the highest performance for a capital-ship mission, but later British design increasingly emphasized balance. The Royal Navy therefore lacked the doctrinal habit that would naturally produce an LCS-like requirement. Superficial similarities in speed do not establish institutional continuity between very different ship types.