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Coffee-lovers hoping for their morning hit could be consuming drinks with caffeine levels that are six times lower than those offered in rival chains, shock new research has suggested.
Costa offers the strongest cappuccino from popular retail chains, while Starbucks' cup contains less caffeine than a tea bag, a study found.
Costa offers the strongest cappuccino out of high popular high street chains while Starbucks' cup contains less caffeine than a tea bag, an investigation has revealed.