Thunder Bolt
Silly old bat
It is rare and only made public recently because of the high-profile cases.There was a Scottish KC who specialises in defence on 5Live this morning and his opinion is that it would be completely unworkable for the reasons I think have already been outlined.
He also said that in his 40 years of work, he hasn't had one defendant who refused to attend sentencing. It clearly happens, as we know from the recent high-profile example, but it does seem to be a relatively rare occurrence.
It is more common in the plea hearings where defendants don't bother turning up at court, so a warrant has to be issued, or refuse to come out of their cells to hear the charges laid against them. That doesn't make the news.