The brexit wet dream of most leave-supporting tories is to be allowed to strip away social and environmental protections, to asset-strip even more, and to move the UK towards a US-style hire-and-fire economy. For them the EU isn't neoliberal enough.
I bore myself repeating this shit, but David Davis was explicit about his wishes for brexit right from the start - his 'vision' (for which, read 'delusion' really, as he badly underestimated the level of EU resistance towards it) was of a differential system in which different standards are applied depending on which market a good is being prepared for. That's a race to the bottom. Now Davis is gone now, but the other shites still there want much the same thing.