https://www.slab.org.uk/guidance/good-practice-in-complex-criminal-cases/
The High Court Practice Note and Protocol [issued May 2018] applies to cases which are:
The Protocol is designed to ensure:
The Protocol summarises good practice that can help reduce the length of trials relating to complex crimes or involving multiple accused. The best handling technique has been determined to be continuous management by an experienced judge, who can try to ensure that trials be kept within manageable limits.
It is deemed that in most cases three months should be the target upper limit, and intensive case management may be needed to ensure this outcome.