There are many characters in Green Wing that make numerous appearances, or are referred to but never appear. These are not considered to be main characters, but still play a part in the main plot. This article also features other minor guest characters and actors.
Lyndon Jones is the head of I.T. at East Hampton. He is a very attractive man, and many of the women staff have taken a shine to him, most notably Joanna Clore. Not surprisingly, many of the men such as Guy and Alan feel threatened by him. Alan went so far as to challenge him to a tug-of-war, which Alan lost.
However, Lyndon is not really interested in the women who admire him, and prefers to keep himself to himself. But it is known that he does have an odd fetish for large underpants. This led him to his attraction to Harriet Schulenburg, who has the biggest underpants in human resources.
During a charity slave auction, Lyndon was bought by Joanna. During the night he made it clear that he found her "Disturbing, tedious and desperate". This did not stop Joanna however, and during another attempt to ask him out, Lyndon got out of it by saying he was on a date with Harriet (who was there when Joanna asked). After they spent the night together, Harriet felt guilty and left him. The incident lead to Harriet being thrown out by her husband Ian. This left the door open for Joanna again, but he only got out of their relationship by claiming he was gay, and kissing Jake Leaf.
Holly Hawkes was Mac's girlfriend for six years. However, their relationship ended after they had an argument about children. Holly became pregnant, and wanted to have an abortion, but Mac objected. Holly said that a child would be "A spanner in the works", and an obstruction to her career. Eventually Holly had the abortion and they separated.
Holly still kept in touch with the hospital, with Angela often talking to her. She was the first person to tell Mac that she was getting married to John James Wyard and that she was pregnant again. Although that seemed to be the end of it, it was not. Holly left John, and when Angela left the hospital to become an actress, Holly became her replacement as senior registrar in paediatrics.
With Holly back, Caroline feels threatened that she might break up her relationship with Mac, but Holly makes it clear that she is not interested in him. However, this turns out to be a lie. In order to revive Mac's feelings for her, she tells Mac that she never aborted their baby, and that their son Mackenzie is now four years old. Everyone believes her and Holly and Mackenzie move into Mac's flat. Sue White later discovers that Holly just dyed Mackenzie's black hair and that he is not at all blood-related to Mac. After the lie is uncovered, Holly leaves the hospital disgraced.