There are still important legal principles in the US and other places around the world based entirely on the decisions of earlier English courts. The first local decisions will reference English cases, and English legal experts often would have been consulted.

Same thing with most of the world's parliaments and congresses having to reference English Parliamentary precedent in order to figure out how to operate themselves. The UK Parliament and courts may be terrible, but they invented the thing and we're forks.

The Romans would like to have a word...