Much of the music performed in Green Wing has been reused in other programmes, most notably Top Gear.
Mackenzie's name is spelt different in the credits of both episodes that he appears in. In Episode 2.5 he is called "Mackensie" with an "s", but in Episode 2.6 he is "Mackenzie" with a "z".
In the "Tests" episode (Episode 1.6), Stephen Merchant is mistakenly credited as a "Lab Technicianian" rather than as a "Lab Technician".
In the first series, Guy's first name, Guilaume, is spelt with one "L", but in the second it is spelt with two.