British Theatre Guide seem to know the score;
Although Mick Martin is credited as the writer, this is very much director Paul Sadot's story. He tells in the programme of his own experiences in the 1970s at "all-nighters" around the country, including Wigan, which are recreated in the play. Sadot's enthusiasm for these days and the Northern Soul scene come through very clearly in the play, the programme notes, the leaflets and the web site dedicated to the play.
Well received and appreciated. I thought it was great!