sapphire I don't think many of them will change.
The ones that get quoted are usually actually very sensible.
Remember the mini bus drivers hours mentioned on a thread a while back?
The jist was EU driving regulations prevented my mate earning a living when the reality is they protect people from being killed on the roads by tired drivers.
There will be no appetite to change rules like those.
There might be a few concessions on the shape of fruit and veg just so Leavers can claim victory but that'll be about it.