Mark Harris - ABA Champion?

[FrankFrank]

Saw this and wanted to see if anyone could verify it - there's an actor saying he was an ABA Champion in his youth but I can't see his name anywhere on their site or on Wikipedia. It's a pretty bold claim and he's going to play a boxer in an upcoming film so I hope its true! It's this chap called Mark Harris:

imdb.com/name/nm3868342
imdb.com/name/nm3868342/bio
"Training in his local gym Fitzroy Lodge from the age of seven, he went on to win the ABA Championships in his early teens, becoming a local hero in the process."

m.screendaily.com/5109976.article
"Mark has a boxing background – he was ABA Champion at the Fitzroy Lodge – and that will add a layer of authenticity.”

express.co.uk/news/uk/414730/Maddie-movie-outrage
"Mr Harris, a successful amateur boxer..."

I've never seen his name on any winners lists but I could be mistaken... Is he a former champion? Or telling porkies?

[Jonny G]

True

search Mark harris Fitzroy lodge boxing there’s a press article from newspaper

All facts and true by the looks of this

[Clegg]

Get your mate to video on his phone, start a fight with this Harris lad, when you wake up watch the video to see if he had boxing skills or just KO'd you some other way

[Lavernebarker]

All facts and true by the looks of this-I agree.