As an aside, one of the greatest courtroom dramas ever made was Billy Wilder's "Witness For The Prosecution". The entire movie is a bravura tour de force for Charles Laughton, who is just wonderful as the aging British barrister.
The George Washington wigs were the funniest thing I saw in London, but I think They stopped wearing them a few years ago......sad.....that and old double decker busses, GONE!