The map below shows teritory that was at some point controlled by the British Empire (in the traditional pink) — the thin white lines show the modern country boundaries. Needless to say, the definition of ‘controlled by the British Empire’ is not universally agreed upon. I’ve tried to produce a balanced map that will lead to few disputes, but if you disagree feel free to contact me. Thanks to James Alcock for pointing out some unintentional omissions.