According to page 135 of Keith Scott's book, "The Moose That Roared,"
Ponsonby Britt is a non-existent person. In 1959, Jay Ward and Bill
Scott invented the name "Ponsonby Britt, Limited" as the new title of
their corporation. Britt eventually became an "O.B.E." and retained in
the cartoon's closing credits as an in-joke. Bill Scott was quoted as
saying, "We had no executive producer, so, we made one up." Britt
eventually became the executive producer credited for all Jay Ward
productions; even a fake official biography for Britt was even crafted
for promotional press releases.