The UK is, at the same time, both one of the world's most successful economies and one of Europe's laggards. The country contains some of Western Europe's richest areas such as the south east of England, but also some of its poorest such as the north east or Wales. It's really not much of an exaggeration to describe the UK, in economic terms, as 'Portugal but with Singapore in the bottom corner'. Looking into the past helps understand why.