I have tried contacting them by email, phone, Twitter, fb and Instagram. No reply. I think they had been struggling for a while and then then global shortage of components and (perhaps) extra duty on stuff that comes from the EU finished them off.
No writing on the hangar and it snapped just at the point where it transitions from thin to thick. Anyway, thanks for your input and perhaps I'll have to get some metalworking tools out!
As an addendum, I have just read that SRAM are proposing a universal gear hangar spec!