A decade ago, many economists argued the UK would sustain longer-term economic damage by leaving the EU. So what did happen?

Ten years ago, Britain chose to abandon its lucrative membership of the world’s largest single market. It has been paying a price ever since.

Legal leaders say the U.K. has become more politically unstable and business has become more complex since the Brexit vote in 2016, but London has largely retained its status as a leading global legal ...