"To Hull and Back", his involvement in crime is the main focus of the storyline, with the Trotters becoming involved in a diamond smuggling operation part-headed – unbeknownst to them – by Slater. His position of authority within the police has been exploited a number of times to successfully smuggle diamonds into England, and over the course of the episode he almost succeeds again, only to be thwarted by Hoskins who drives him into a sting and lands Slater with a five-year prison sentence. "The Class of '62" Slater's final appearance in character was in "The Class of '62", in which he has been paroled from prison after three and a half years of his five-year sentence and returns to Peckham, setting up a school reunion to which Del, Boycie, Trigger, and Denzil are invited, with Rodney joining them. Over the course of the episode, it is learnt that Del's girlfriend Raquel is Slater's ex-wife, and the school reunion was merely a set-up to gain contact with her regarding his divorce proceedings, as he knew from the start that she was living with Del. It is also revealed that Slater has returned to the illegal diamond trade, which Del and Rodney use to blackmail Slater into giving Raquel a fair divorce, no longer pestering her and leaving Peckham for good, under the threat of them informing the police about Slater's return to crime. This prompts Slater's departure from the series. Slater appears once more in the series but not in a character appearance, in the final episode "Sleepless in Peckham" when Del and Rodney are given an old photograph of the very first Jolly Boys' outing from 1960, in which Slater is pictured. The first Jolly Boys' Outing forms part of the storyline of the prequel series Rock & Chips, which features a young Slater. Rock & Chips A young Slater is shown in the prequel series Rock & Chips, played by Calum MacNab. Slater is initially shown as a prefect at school, trying to intimidate Del and his gang but ultimately being insulted by both the gang and his superiors from whom he attempts to gain friendship. He is part of the first Jolly Boys' Outing as noted at the end of Sleepless in Peckham, in which he is tricked into taking drugs and passes out before they reach their destination. Over the course of the series he joins