All the Brexiteers involved politically (MPs) or having willfully funded pro-Brexit campaigns (major donors), should be tried for a treason felony for plotting to bring the downfall of the United Kingdom government and throne under the present law:
to levy war against the sovereign "in order by force or constraint to compel her to change her measures or counsels, or in order to put any force or constraint upon or in order to intimidate or overawe both Houses or either House of Parliament".