OOPS!!
Since you only wanted CLUES , I hope that you've not read the ANSWERS I just posted (and which, with my moderator's hat on, I've also just removed). I really must learn to read questions properly before posting! Sorry!
Assuming that you still want clues, think of a fictional barrister whose first name was Horace (and who spent a great deal of time at the Old Bailey). Then find out the name of the case which he constantly referred to .
Now that you've got barristers in mind, switch from fiction to fact for your other answer.