The U.K. passed legislation in 1925 that made it easier for individuals to use trusts to keep their financial affairs under wraps. Four years later, London courts ruled that Egyptian Delta Land and Investment Co. Ltd., which was registered in London and headquartered in Cairo, did not have to pay tax in the U.K., setting a precedent for future tax avoidance.[1]

[1]http://www.bloomberg.com/news/articles/2013-05-03/offshore-t...