How useful did Britain consider the additional bases acquired with colonies and Chinese concessions?
Short answerVery useful: once acquired, the harbours supported sailing, coaling, supply, and worldwide naval movement even if Britain had not originally wanted the territory.
NotesReluctance to acquire territory did not prevent Britain from finding value in it afterward. A worldwide navy benefited from almost any additional secure harbour. Sailing ships needed places for repair and supply, while steam fleets added the demand for coaling stations. Bases could therefore become useful links in maritime movement even when policymakers had not wanted the original colonial commitment.