"It's your Funeral" refers to "jamming" and "jammers", i.e. constant hoax attempts to keep the authorities busy. The Situationist International referred to some of its activities as being like "radio jamming" in 1968, the year after "It's your Funeral" was aired. Negativland claims to have invented the phrase "culture/cultural jamming" in 1984 to describe billboard alteration. "It's your Funeral" is perhaps one of the earliest uses of the term jamming in a political context.
The martial art of "kosho" was devised for this and another episode. There is in fact a real martial art called "Kosho Shorei Ryu Kempo".
This episode contains more No 2s than any other - not only can one see Andre Van Gyseghem's retiring No. 2, and the scheming Derren Nesbitt as his "heir presumptive", but two others - albeit given only a line each.
No.8 is wearing a watch with an MI5 (black+silver stripes) regimental watchstrap.