When in England did Kings and Queens stop being able to behead people?/?

Question

I was just wondering when it went from Kings and Queens beheading people for treason to judge and jury? Thats one answer I can't find.

Answer 1

After the Manga Carta was signed

Answer 2

Even in the time before the magna carta, there was a judiciary which administered justice, even if the high court was controlled by the king, he could not just lop off heads willy-nilly when he felt like it. Especially if the head belonged to a fellow member of nobility. There were trials of a sort, before the noble's peers, but the outcome was usually decided by the king. There were also ecclesiastical courts, which were under control of the church and therefore the pope, and not the king.
The Magna Carta did constrain this power by making sure that it codified that the king was bound by law, as opposed to divine right, and therefore could be held accountable for breaking that law.
Here are some of the major clauses dealing with courts and trials from that document;
These rights were the beginning of English judicial rights. Clauses 17 to 22 allowed for a fixed law court, which became the chancellery, and defines the scope and frequency of county assizes. They also said that fines should be proportionate to the offence, that they should not be influenced by ecclesiastical property in clergy trials, and that people should be tried by their peers. Many think that this gave rise to jury and magistrate trial, but its only manifestation in today’s world is the right of a Lord to trial in the House of Lords at first instance.

Clause 24 states that crown officials (such as sheriffs) may not try a crime in place of a judge. Clause 34 forbids repossession without a writ precipe. Clauses 36 to 38 state that writs for loss of life or limb are to be free, that someone may use reasonable force to secure their own land and that no one can be tried on their own testimony alone.

Answer 3

I know Prince Phillip well, and he still chops off heads, but no-one is supposed to know because he's not actually a king!

Answer 4

I am guessing the 18th century or early 19th century. Of course, as we know, the guillotine was quite popular in the 18th century.