So from the Worcestershire sauce wiki
“ The precise recipe has been a secret, but an original 19th-century list of ingredients was found in a skip at the factory in 2009 and includes vinegar, molasses, sugar, salt, anchovies, tamarind extract, onions, and garlic as well as some other key ingredients which may include cloves, soy sauce, lemons, pickles, and peppers”
How can lea and Perrins be a generic name for something ONLY THEY KNOW THE ACTUAL RECIPE FOR!!!