In an ArtCornwall interview Forrester has recalled this time in the 1980s:
'I grew up in Stoke Newington and Hackney, and a lot of the paintings...are to do with the nightclubs in the Dalston area, mainly Jah Shaka sound system; mainly the dub reggae sound systems in the early days... I used to go to the London nightclubs and make drawings to the length of a record, which is about 3 or 4 minutes.
So I'll have A1 paper, it's dark, and I can't really see what I'm doing, so I'm going for the movement, the action, the expression of the people. I'll make the drawings, and take them to the studio and use them for making the big paintings in the studio... London was a very active, vibrant, colourful place then. It was cheaper and freer to live there then too. You could squat a house. So I was in a squat for about 5 to 6 years in Clissold Road. It was easier because an artist could have lots of space. And there was an energy there. Particularly the dub nightclubs. Jah Shaka, the Rastafarians, basically they'd dress up, they'd dance and play their monosystems, and I wanted to capture that energy'.