Working away this morning, I came across Bushel's Case, which established in 1670 that a judge can't really lock up a jury without food and drink indefinitely to get the required verdict from them. Quite a lot hangs on that. (NB some sources say Edward Bushel(l) was the jury foreman, which is not the case, per the ODNB.)
What would be nice would be a photo of the plaque in the Old Bailey, commemorating William Penn and his "partner in crime" William Mead, who were in the dock in the relevant case.
has a photo, not usable on Commons as such I think without some further ado.
The plaque said to date from the rebuilding of the Old Bailey (https://books.google.co.uk/books?id=4n4qvZo9QxsC&pg=PA170) which puts it at about 1907; and if it is flat then it would be OK to reuse the online images out there. There is a mention in the The Journal of American History around 1910.
There are other Old Bailey plaques on Commons. If anyone could oblige with a photo of this one, I think it would be worthwhile. I don't know how easy it would be to photograph afresh, though. The Open Plaques page http://openplaques.org/plaques/10523 has no image. This page
http://www.britannia.com/hiddenlondon/penn_oldbailey.html
says it is in the entrance lobby (good); but that the lobby is closed to the public, cameras not allowed (not so good).
Charles