Which one isn't?
Which one isn't?
Edit: it's stated that the throne is used during only the "state opening of the parliament" so that means it's not used "day to day".
https://www.parliament.uk/about/living-heritage/building/pal...
... but I can't find a link to support this.
Notice the seating behind the table in these two images, one of a session with John Berkow prosiding as speaker, I think it is under Cameron's government (noughties [1]); the other of Pitt the Younger addressing the House [2]. Neither shows a vacant seat. Perhaps it is confusing it with the opening of parliament when the Queen wasn't able to attend (2022 [3]) and her throne was left vacant?
The mace represents the king's authority in parliament, you can see it at the front edge of the table in both images ([1], [2]).
The monarch's messenger is Black Rod, they're the one who knocks on the door to call the MPs to go and listen to the "King's" Speech.
[1] https://cdn.britannica.com/25/99525-050-DCC15F00/Chamber-Hou... [2] https://cdn.britannica.com/03/129303-050-05283CEF/William-Pi... [3] https://www.theguardian.com/uk-news/2022/may/09/queen-to-mis...
Hmm, I guess I was suspicious. It's like the old bloke at the end of the bar, who always wants to have something interesting to say.