Compton continued as governor of Banbury until the king left Oxford, and when the whole kingdom was submitting to the parliament he, on 8 May 1646, surrendered upon honourable terms.
As major-general of the king's forces at Colchester, when that town was besieged by General Thomas Fairfax, he kept the garrison in some competent order while they were enduring privations.
Compton died suddenly in Drury Lane, London, on 18 October 1663, and was buried at Compton-Wynyates, Warwickshire, where a monument was erected to his memory.
[2] Samuel Pepys, who was Compton's colleague on the Committee for Tangier, was shocked and saddened at his unexpected death, especially since he had seemed to be in perfect health a few days earlier.
He noted sourly that despite the genuine grief for Compton, the merrymaking at Court continued unabated, and drew the moral that "we all die alike, no more matter being made of the death of one than another".