Was HMS Tiger a one-off because the next battlecruiser design was already in development?
Short answerMore likely she stood alone because Battenberg stopped the sister ship and favored the fast-battleship path.
NotesTiger's cancelled sister is attributed chiefly to Prince Louis of Battenberg's arrival and his preference for fast battleships over additional battlecruisers. Senior naval leaders should not be treated as a single Fisher faction: agreement on aims did not mean agreement on methods.