The bloke is either confused, economical with the truth or possibly both.
Just listened to to the documentary again.
"Northern soul , there ain't a black person there"............thats not true.
"I remember trying to go up north & be involved in these parties, you just weren't welcome"........whats he really talking about? When have you ever heard a northern soul do called party?
You can't please every body all the time. Nor can you rely on one persons opinion to to be a truthful recollection.
Here is something that you may wish to analyse........The BBC could have interviewed 2000 people who did go to Wigan, but they chose the one person who probably didn't go. Why would they do that?