Dickensian lawyers?

Does "Dickensian lawyers" mean "excellent/first-class lawyers"?

Background info:

Great scientists who profess religion become harder to find
through the twentieth century, but they are not particularly rare. I
suspect that most of the more recent ones are religious only in the
Einsteinian sense which, I argued in Chapter 1, is a misuse of the
word. Nevertheless, there are some genuine specimens of good
scientists who are sincerely religious in the full, traditional sense.
Among contemporary British scientists, the same three names crop
up with the likeable familiarity of senior partners in a firm of
Dickensian lawyers: Peacocke, Stannard and Polkinghorne. All three
have either won the Templeton Prize or are on the Templeton Board
of Trustees. After amicable discussions with all of them, both in pub-
lic and in private, I remain baffled, not so much by their belief in a
cosmic lawgiver of some kind, as by their belief in the details of the
Christian religion: resurrection, forgiveness of sins and all.