As a result of the seven years war, how far west did british territory exist?

Following the Seven Years War, the British Empire was able to secure all territories from the Atlantic coast to the Mississippi River. This was a great achievement for the Britsih Empire who now controlled larger portions of the continent at the cost of a French presence in North America. However, the presence of the English was not challenged, as a result of the Seven Years War, the Spanish also amassed vast territories on the continent.