What STIDW said.
I don't think there will be a new referendum. Yes it is democracy but a pretty shoddy version of it given the massive back pedalling on so called promises made.
I do think there should be a referendum on whatever deal is agreed with the EU. With appropriate tie ins (eg minimum % of population in favour).
I don't think they can do this though as no negotiations can happen until the leave process formally starts and once it starts it has to run its course. Would be happy to be wrong though.