Detailed mapping and accurate levelling of fluvioglacial and raised marine features in the Forth Valley between Stirling and Burntisland show that the most conspicuous late-glacial raised beaches of this area are associated with the Perth Readvance and possess a marked gradient down the Forth Valley. The relation of the raised beaches to fluvioglacial deposits is described and discussed and this leads to the conclusion that the Perth Readvance resulted in a renewed downwarping of the land, the response to glacial loading and unloading being immediate and rapid.