ANSWER: Yes, the African Lion in nature, does not roar. The natural voice of a Lion is strong with deep base that echos far enough for his female wives to hear, but it is still not a roar. The British use the African Lion on many things that represent Royalty, even though they arent well known to like Black African people per-say. It is likely the Lion symbol of power in Britain, used for Royalty, came from Catholic symbols of power, who got it from Italian-Greek symbols of power, who were invaded and ruled by Egypt around 2500 years ago. A throne chair often made for a living Egyptian God (Pharaoh) was crafted with Golden Lion heads on the arm-rests (a chair can be seen in Museums -Google). The famous MGM Lion Roar used in USA Hollywood was taken from a sound clip of an East or Southeast Asian Tiger.
Central Asian-Indian and Southeast Asian Tiger's Roar