@GrinitchSpinach
Doesn't the solicitor instruct the barrister? I presume Maya's GC solicitors sought a barrister who was either sympathetic or at the very least not hostile to GC views.
I've dealt with civil stuff (IANAL) & my experience is sols have a list of a few chambers depending on court location & will seek a particular QC but more often will take whoever is available - they need representation so if Ben Cooper has no availability (cos he's been booked out for the next 10 years on terven cases) they'll either take a recommendation or they'll just ask for someone available. I think when sols develop good working relationships with QCs/barristers, and get to see the ones that really are great at getting across their brief, they'll often try and secure specific ones, but it's often hit & miss if their preferred barrister is available.
I've done training sessions with a few barristers, and run through mock trials, and they're as sharp as you'd imagine. The way they forensically tackle a point from several different angles, and then double back when they pick up on an inconsistent point or detail, is fascinating to witness.
There's also the problem when the barrister has very little time to get to grips with the details & it comes across in their presentation. The QC that FPFW had in the Scottish census case was an example of that. He was a bit confused & muddled on some details (it's a complex argument even for those who know it well) & there was likely very little time to prepare.