The last time Slater is seen is in the series finale "Sleepless in Peckham", in a photo of the original Jolly Boys Outing to Margate in 1960.
The last time is in the series finale "Sleepless in Peckham". This is in a photo of the original Jolly Boys. These original Jolly Boys are outing to Margate in 1960. Slater is seen The last time.