Gary Holton (Wayne) died of a drug overdose during filming of the second series; he had filmed all of his outdoor scenes but had to be written out of some of the indoor scenes (generally by having a character remark that he was out with a girl). He was replaced in the remaining series by Noel Clarke as Wayne's illegitimate son, Wyman. The final episode of Series 2 opens with a spoken dedication to Holton's memory by Tim Healy.
Pat Roach (Bomber) was terminally ill when shooting began for the 2004 Christmas specials, and died that July. In the series, Bomber is said to have retired, and the other six raise a glass in his honour during a restaurant scene, toasting, "To Bomber!" A dedication to Roach's memory appears at the end of the final episode.
What Could Have Been: A third series set in Russia was planned during the 1980s, but was cancelled due to Gary Holton's death. This premise was briefly used at the beginning of season four.