As a young privateer, he served as ensign under the command of Sir Charles Riche, a relative of his mother, and participated in the unsuccessful Cádiz Expedition of 1625 led by Robert Devereux, 3rd Earl of Essex.

[1] In December 1629 two ships funded by the Earl of Warwick discovered the islands of San Andreas and Santa Catalina in the western Caribbean off the coast of what is now Nicaragua.

Camock with his barque Warwicke & Somer Islands remained on San Andreas, while Daniel Elfrith returned to England via Bermuda to report the discovery.

Bell wrote a letter to Sir Nathaniel Rich, the Earl of Warwick's cousin, making the case for colonizing Santa Caterina.

[6] Camock found the Dutch brothers Abraham and Willem Albertzoon Blauvelt at Providence, and they piloted him across to Cape Gracias a Dios on the mainland.

[7] On July 30, 1634 the company wrote to Captain Sussex Camock saying they were glad to hear of his safe arrival at the cape, and his good reception by the natives.