Can I connect britbox to my apple tv

Hi. It sounds like it's only available on the web right now, see link: https://www.britbox.com/help. You should be able to use AirPlay from an Apple device or computer to view it on Apple TV. They say they're working on an app for Apple TV 4, so watch the TV app store.

While Apple TV may not have BritBox their rival Roku does. Perhaps the lack of new channel choices is one reason they rated a 59/100 with consumer reports.

That has nothing to do with the hardware, if the developer has chosen not to create an app for TVOS then that is on them and where the complaint should lie.