And brandyrose, I can improve on that. I once turned up, instructed, in a matrimonial, against a spouse who was unrepresented. The case started, that spouse was in the witness box, and I started to cross-examine her. Seeing how it was going, the court asked her whether she had not tried to get representation. She delved into her bag and produced a temporary legal aid certificate in favour of my instructing solicitor. On seeing this, I said to the court "It appears that I am cross-examining my own client!" The court fell about trying to stop laughing.
What had happened was that my brief instructions were completely ambiguous and I reasonably concluded that I was for the husband. Of course, as it turned out, both parties had gone to the same firm. It may be that I was meant to appear for the husband, but equally, I could have been for the wife. However, this became the subject of much mirth, and much exaggeration in the retelling, in my chambers and at the Bar, for years.
I once got a judgment without even being in court, because I couldn't find the right room in the High Court. The Master (judge) in the case proceeded in my absence, observing to the other side "I am not surprised counsel has not turned up. Your case is so weak that he decided not to bother" It fair encourages you to have faith in lawyers and the legal system,doesn't it?