SOLVED. Controversial Gothic or Social Realist book, 1980s-1990s, by a British female author about a girl raised on a farm by abusive father figure. [s]

[Bear]

I want to say the title is pig girl but I don’t think that can be it because the book I’m searching for had a Wikipedia page and when I type in Pig Girl it comes up with the Colleen Murphy play only.
This is a novel, the content is mature, it may have won an award or faced a boycott in some bookshops and literary events, it involves a girl who lives with her abusive father or uncle on a farm that is on a motorway near an airport close to London near the Home Counties.
Maybe it draws particular attention to every aspect of her life spiralling out of control such as her struggles as a teen mother and her teachers being angry because of truancy and low grades.
The author is definitely female and wrote another book with similar themes, exposing how girls are let down and exploited. This other book was written at a very different time like the late 1960s or the early 2000s. Any suggestions?

[Capn]

Where is the mature content? In the sexual activities of the protagonist? Is there rape or sexual abuse involved? Uncle or Father the incestuous perpetrator?

Drug use?

Anything about the cover?

[Ayshe]

It looks like this was solved on reddit: Porky?

[Bear]

Solved!