Would be much more helpful if it indicated literally anywhere on the homepage that this was specific to the UK.
Being a .com as opposed to a .co.uk, you can't even tell from the domain.
Being a .com as opposed to a .co.uk, you can't even tell from the domain.
There is a reason the prime meridian goes through Greenwich and it isn’t because we asked nicely.
Give it a few months.
Sometimes you need moments like this to remind you that your assumption is wrong
If you use a .com for something that is specific to a country/region that is not the US, the onus is on you to clarify. That's the problem here. If you're not going to make it ".uk", then you should be making that obvious on the homepage.
If you are from the US, the only nation who doesn't frequently use a national TLD, the onus is on you to judge if a site is commercial, US-specific, global, or something else entirely.
People outside the USA, i.e. the majority of the world, often experience the opposite to what you've described: the tiresome implicit assumption that everything on the internet is US-related by default. It's not.
The only big red letters are "THAT NEEDS YOU".