I'm not sure about other brands, but Cabot cheeses are Halal. Cabot offers a broad range of halal cheddar cheeses that have met the rules and regulations specified by a supervising Islamic...
No; Black Diamond cheeses- Old Cheddar, Extra Old Cheddar &any Processed Cheese (cheese slices &cheeses spreads) contain animal rennet.But, probably best avoid it if you're unsure.