Louis has been rapidly aged from about 11 years old to about 16.
The character was born on-screen in 1996, but was aged upon the characters return in 2004 to about 11 however with the casting of Gregory Foreman, a nineteen year old actor, his age has jumped about 4 years.
On the end credits the character Louis Fairhead, played by Jack Dedman, was credited as Louis Thompson. Thompson is the surname of the actor who plays the character of Louis's father.
Continuity Error: Charlie celebrates his birthday in this episode set during January yet in Gas, he said he was a Taurus, meaning he was born between 21 April 21 and 21 May.
This is more of a thought really than a goof: Alistair Taylor returns to the programme after a three-year absence and no-one seemed to notice or require an explanation. Surely at least one person would have welcomed him back?