I tried going through your sign up process to see if I could just get notified if you start in the U.K. but it seems you assume anyone coming to the site is in the US. I for one would welcome something like this.
British founder here so I'm genuinely sorry about this! Thought I'd fixed it the day before we launched on HN. Our infra will be updated by end of this week.
If you'd like to be on our waitlist, just drop me a quick email on richie@joinfella.com and I'll make sure you're in our system.