A Barrister would not be meeting his clients (apparently for the first time) and asking basic questions about their history, business and witnesses, literally just hours before the case is heard in court, as "Justin" does in this episode.
When Del is on the Television program "Goldrush", the camera is reflected in Rodney's TV when Del is asking him a question.
They went to the wrong Albert's funeral. Surely they would have known where Albert lived and Elsie Partridge's family better than shown, especially as Boycie, Trigger, Denzil, Marlene all made it to the correct funeral.
When Rodney and Cassandra are dressed up, Cassandra says, "My boss can't stand late parties," and walks off, a boom mic follows her and can be seen in the top right corner of the screen.