A trial would be needed to determine guilt, if charged with treason but given the fact some have not even been charged with public order offences after being arrested, I doubt treason is high on the list of CPS priorities.
The offence of treason involves "Compassing the Death of the King, Queen, or their eldest Son; violating the Queen, or the King’s eldest Daughter unmarried, or his eldest Son’s Wife; levying War; adhering to the King’s Enemies; killing the Chancellor, Treasurer, or Judges in Execution of their Duty". [Treason Act 1351].
So I'm not too worried that the "Not My King" poster in my front window is going to get me locked up in the Tower any day soon ;-)
'Lord Steyn said: "The part of s3 of the 1848 Act which appears to criminalise the advocacy of republicanism is a relic of a bygone age, and does not fit into the fabric of our modern legal system. The idea that s3 could survive scrutiny under the Human Rights Act is unreal."'
the Guardian's case was on a what-if
and their lordships said 'in court we dont deal with what ifs'
which means in law they didnt have to give an opinion and if they do it may well be obiter dicta = ( = fluff. ) [ Anyone called? thx to Dick Emery]
1848 Act surprisingly was to convert various High treasons into felonies. Liberalising. hem yes
1351 Act was to regularise the common law on treason. Since the King's Dad, Edw II, poofta paddie they called him at the time, had died in er embarrassing circumstances, there had been common law treason spread/blur. So the 'new' law defined and restricted