Further enguiries with the LAA inform me that the lower Vne/max speed figures are from the LAA having their say and these figures apply to both microlight and light aircraft versions when built in the UK. The higher figures are from the manufacturer and apply to the rest of the world.
Clearly the difference is due to the UK have special/different air to the rest of the world so we need to be restricted further for our own good. As usual.
Rans6....