Of course the Queen would grant a royal warrant to a tea brand. (After all, tea may be the only thing she drinks more often than those reported four boozy beverages a day.) If you really want to drink like the Queen, sip on the brand’s English Breakfast blend, her favorite.
You may not be able to live like a royal, but you can certainly eat and drink like one.
From https://www.foodandwine.com/news/royal-warrant-food-drinks-from-queen
