1955: Angostura Issued a Royal Warrant by Queen Elizabeth II - Taste Trinbago
In 1904, Alfredo Siegert was appointed purveyor of Angostura aromatic bitters to the King of Prussia, and in 1907 to King Alfonso XIII of Spain.
Complete guide to all the glittering regalia being used at the coronation
The Caribbean History Archives
1955: Angostura Issued a Royal Warrant by Queen Elizabeth II - Taste Trinbago
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Burberry, Barbour, Launer: brands face losing royal warrants after Queen Elizabeth's death unless they gain King Charles' approval
Queen Elizabeth's Passing Voids Royal Warrants Granted to Food and Drink Producers