Pinney inherited one of the largest estates in Nevis, but was brought up in England and scarcely regarded himself as a West Indian. He visited the island for the first time in 1739, merely to put his plantations in order, and stayed only till 1742.
Pinney was returned unopposed for Bridport at the general election of 1754. In Dupplin’s list drawn up soon after he was classed as a Tory, but his letters describing political events are remarkably detached. On 11 Dec. 1755, in a letter to his cousin Azariah Pinney, he wrote:
He died 11 Nov. 1762.
