I want to cancel a Brit Box subscription but when I go onto Settings-Subscriptions Apple One won’t let me past without their Apple One Try Now page..ugggggg!!

Apple One is only for used to bundle Apple services. Try going into settings, then tap you name at the top, then tap subscriptions, then tap on Brit Box & scroll down to cancel.

This article gives the instructions, If you want to cancel a subscription from Apple - Apple Support

I hope this helps!

On what device do you see this Apple One offer that seems to be blocking the access to settings for other subscriptions?