Newspaper reports indicate that a Guildford Tory Councillor Christian Holliday has launched a petition to demand that when and if Britain leaves the EU anyone supporting continued membership should be prosecuted under the Treason Felony Act (as amended).
The current Act dates from 1848 when it brought together several earlier Acts and replaced the death sentence for treason with a felony- in practice at the time transportation to Australia.
The State had reason to do this. Juries were reluctant to convict where the death sentence was involved and in the revolutionary year of 1848 the State wanted convictions to frustrate any attempts at revolution. Hence the first two people to be convicted under the newly amended Act were the Irish Republican Chartist John Mitchel and the leader of London Chartism William Cuffay. An account of Cuffay’s Trial is here:
Whether 2016 is as revolutionary year in Britain as 1848 might have been remains in question,though presumably not in the mind of Mr Holliday