Some cases may be too complicated for jurors to understand
Juries sometimes refuse to follow the law (perverse verdict)
No one can inquire into what happened in the jury room
Do not have to give reasons for their decision, therefore there is no way of knowing if jury understood case
Research shows doubts about 5% of jury convictions
There is no requirement that a jury must be multi-racial, prejudices may still exist
Media coverage may influence jurors, especially in high profile cases
Juries are often criticised on the grounds that they acquit too many defendants
The compulsory nature of juries is unpopular
The use of juries makes trials slow and expensive - each point has to be carefully explained to the jury and this takes longer