By a strange twist of fate, I've recently spotted an all Cobblers kit wearing team play in the same London 5-a-side organisation as I do, albeit on a different day. Turns out that are officially called 'Shoe Army' (link below)
I'm issuing a 'come and get me plea' on the off chance they use this forum, offering them my services if they ever need me, as a Cobblers fan who lives in South West London this feels like a perfect arrangement for all parties.
https://soccergods.co.uk/venues/griffin-school-clapham/wednesday/