On the BBC story I read, it mentions churches and Easter right at the start. Are you really so bothered that you need to see the word 'christian' too?
You should take it as reassurance that they assume their readers can join the dots. Maybe Christianity isn't as dead as some on here say?
By the way, it seems a bit poor for tesco to label their food section after Ramadan, which is a festival specifically about fasting. Do they really call it Ramadan delights?