The Criminal Bar Association has insisted today's action will not jeopardise trials, but warned that future trials could be at risk if the issue was not resolved.
It has been careful to call the walk out a "non-attendance" rather than a strike.
There will also be protests outside courts in London, Manchester, Liverpool, Leeds, Birmingham, Newcastle, Winchester, Bristol and Cardiff.
The Bar Standards Board has warned that any barristers who stay away from court will almost certainly be in breach of their professional code of conduct with "very serious consequences".
More top news
An owner says his video shows one of his pet dogs crying and mourning the death of other pet.
New study says migrant voters could have a "decisive" impact in a range of key marginal seats in the forthcoming general election.
Andy Murray will play world number one Novak Djokovic in Sunday's Australian Open final after the Serbian beat Stan Wawrinka in five sets