London's convenient geographical location (operating during Asian and American markets) is also instrumental in preserving its dominance in the Euro market.

ISM (Institute for Supply Management) Manufacturing Index reflects a compound average of 5 main economic areas (new customers’ orders 30%; manufacturing 25%; employment 20%; supply orders 15%; inventories 10%).

The US government reacted in 1950s by imposing laws to restrict dollar lending to foreigners. Euro markets were particularly attractive because they had far fewer regulations and offered higher yields.