 Denison-Pender and his colleagues initially saw no threat from the wireless technology as wireless was slow, had a lack of secrecy and was liable to be interrupted.In 1904 Denison-Pender and the board had conversations with Lee De Forest with a view to buying a percentage of his company but the Eastern Telegraph board declined to make the investment in the end.In 1917, following the retirement of Sir John Barry, he became chairman and his son, John Denison-Pender, 1st Baron Pender, succeeded him as managing director.