OTOH, CPS barristers (like my brother-in-law) aren't exactly paid a fortune. Still, legal aid has been eroded over the last decade or so, which is quite disgraceful.
Has that second point changed since the Birmingham 6? No-one else has been prosecuted for that but they were awarded compensation (as you say, less their room and board expenses which is really adding insult to injury), although it took a decade from their release.