Richard Chellew began the business in 1889, trading under his own name and as Chellew & Co. A separate corporate account starts Pengreep Shipping Co. in 1913, acquiring ten companies’ assets in 1918 and becoming R.B. Chellew Steam Navigation, then Chellew Navigation in 1919. Later sources still use Chellew Steam Navigation. The London owning company and Cardiff-based Chellew Steamship Management were operated through F.C. Perman and later Baden H. Roberts. Ships used the prefix Pen. The business joined Esk Shipping in December 1955, when its markings disappeared.
U.K., originally Truro, then Cardiff and London.
Keep the explicit scope label independent; no alias or company identity is inferred.