Egerton sat for Brackley on the interest of his cousin, the 3rd Duke of Bridgwater. A professional soldier, he appears to have taken little active part in politics. He was reckoned hostile to repeal of the Test Act in Scotland in April 1791. As spokesman for the Bridgwater canal interests he thwarted the Bolton and Bury canal bill (22 Apr. 1793) and surviving correspondence shows him concerned with canals and agriculture.
He was a supporter of Pitt and no vote against his administration is known. In return he looked to the minister to promote his military career, writing to him from Ireland, 28 Dec. 1795, for a colonelcy then vacant.
Egerton was latterly ‘much with’ the duke and on his death in March 1803 succeeded to the earldom of Bridgwater with about £2 million, making him the fourth richest man in England.
