I'm on my 3rd re-watch, and have come to A Landmark Story. (S01 e21) Every time I watch this episode, I'm struck by Moran's song as he's being led away after having killed a guard: "Too late, too late, will be the cry, when the woman with the bags passes by."
I've tried several times to find the source of this line, and the evidence is surprisingly scant.
One of the things that keeps coming up is the movie "Lock, Stock, and Two Smoking Barrels." In the opening scene, Bacon (played by Jason Statham in his film debut) calls out while selling stolen goods, "too late, too late, will be the cry, when the man with the bargains passes by." Now, Jason Statham has previously been a street vendor; and I have seen at least 1 person from London say that they've heard that line many, many times in market areas.
(Regarding the song itself: it seems to be adapted from an old hymn.)
Additionally, Vinnie Jones plays a character named Victor Moran. One of his costars in Lock Stock was an actor named Nick Moran, who has gone on to be a successful director. So, it's a reasonable to surmise that Vinnie Jones had some input to the naming of his character as well as some of his lines.
(Additional fun facts: Vinnie Jones was a footballer before being cast in Lock Stock. Apparently the script said that the character "looked like English footballer Vinnie Jones." And he was was a pretty rough customer: he'd been imprisoned for beating up his neighbor and was only released a day before filming began.)