technically Philip II's army was recovering it immediately after the French capture, but the change of government in England and Elisabeth herself recognizing her inability to maintain it in the long term, stopped everything, so that Calais remained in in Paris, furthermore the religious division worsened the situation, preventing a possible English takeover in the following centuries, given that I hardly see Paris agreeing to the existence of a territory friendly to the Protestants, in the hands of a fairly important power, and in the vicinity of the same capital, particularly if after the bloody wars of religion, even more so if London continues to support the Huguenots like Otl, but assuming that Henry VIII's last war goes slightly better, then we find ourselves again with an enlarged pale de Calais, with Boulogne and perhaps another town annexed to it, if Henry VIII had survived until 1551, it is highly probable that the works of fortifications are not interrupted like Otl with Boulogne also returned to France before the agreed 8-year truce expired, furthermore the revolt in Cornwall of 1549 would also be avoided, which further burdened state finances ( along with the war against Scotland ), so if Mary I had managed to ascend to the throne a few years early ( that's why I suggested 1551, where Otl there was a sweating epidemic, in which both Henry and Edward could die, this also allows us to no longer have to fight on the Scottish border, allowing the treasury to breathe ) and with the works possibly completed, she would have a more resistant Calais on her hands of Otl, as well as having full imperial support in the event of war ( after all, Burgundy is literally there alongside ), this puts England in a better position than Otl, furthermore there would be greater interest in maintaining it than recovering it centuries later, when its importance as a commercial outlet for London no longer counts for anything, but rather would only represent an impediment to its consolidated " Blue Water " policy