"Portakabin" is a brand name of a very small mobile home (pronounced
"port-a-cabin"). The Butchers use one as an office.
In Cockney English, "poxy" means inferior. A "chippie" is a fish and chips
restaurant. "Ta" means thanks. A "quid"
is a pound (money). "Up the spout" means pregnant. A "cow" is a bitch. A
"prat" is an idiot. (Note: "eh" is usually pronounced "Ay," like the name
of the letter A, especially when at end of a sentence/question. Eh?)
Braces {} enclose unclear speech.
This episode involves a lot of people talking over each other. Rather than putting, "[over her/him],"
all over the place, double dashes surround speeches that overlap (partially
or fully) the preceding speech. If it's a short speech, (e.g. "--Get out!--")
you can bet it completely overlapped into the preceding speech.
When I printed this, it took 36 pages.