Dave returned in the first episode of Season 10.
Ripley returned to the series for a guest appearance in the final episode (2003).
Danny returned in the final episode of Series 8.
Norcross returned to the show in the first episode of series 7.
He returned as Wade in the second episode of the second season.
Byron returned in the second episode of season eight.
The character returned in the episode "there's nothing like a nurse".
She then returned to the house in the next episode.
The second time, Karen returned in the next episode.
He later returned in the next episode asking for a second chance which Jeff gave him.