It is quite hard to think of a tax haven that is not part of the Commonwealth or former British Empire, Panama being one of the few. A true tax haven is a different thing to mechanisms like the &#x27;Double Irish&#x27;, seems UK PLC is getting even with that.<p>The Square Mile - &#x27;City of London&#x27; - is like a country within a country too, so lots of strange finance things go on with London being one big black hole that money orbits, mysteriously.<p>This is how Britain punches above its weight to make London a &#x27;world city&#x27; as far as global capitalism is concerned. This has been going on for centuries.