I'm not kidding by the way - https://www.bbc.co.uk/programmes/p02463c0 it was Maine Line Service Crew. Rebranded, apparently it's meant to be ironic and a piss take on the 2000s boy band, but i'm not buying.
This is well worth a watch if you can get it. There's literally a scene with him...
my sauce suggested it was BHAFC Pen Pushers having a scrap with the Pompey Administrators, not quite as exotic as Man City's Blazing Squad or West Ham's ICF. But a tasty affair nonetheless.