14 years previously. Not that long.
That was when George III renounced his nominal claim to the French throne, but nobody had taken the claim seriously in some time. It was mainly used historically as a formal casus belli for a war that could be used to set up more realistic goals (e.g. reclaiming or enlarging Gascony and Normandy in the HYW, or enlarging the Pale de Calais during Henry VIII's wars against France). I don't think it had even been used to that extent since the 1540s.
More relevant to the OP's scenario were the old English claims on Calais. Gascony/Aquitaine, and Normandy. England lost Calais for the last time in 1563 and renounced claims to it in 1564. Gascony and Normandy were lost for the last time in 1453.
In 2034, Britain's territorial claims on the former 13 Colonies will be as long-abandoned as Britain's last territorial claims against France had been in 1815.