Here it is:
It is a pleasure to open the Information Age exhibition today at the @ScienceMuseum and I hope people will enjoy visiting. Elizabeth R.— BritishMonarchy (@BritishMonarchy) October 24, 2014
There's intense debate in some quarters as to whether Her Majesty pressed the button herself or not, with the Tweet apparently sent from an iPhone as the Queen pressed an ungloved finger to the royal iPad.
The initial responding Tweet was naturally enough from @sciencemuseum, but the first reaction from a member of the public was this from Guardian technology reporter Alex Hern:
@BritishMonarchy Welcome to twitter! Abdicate.— Spooky Alex Hern (@alexhern) October 24, 2014
Hern is presumably a big fan of Prince Charles. ®
*Of course there are other queens. There are also other Royal Navies. But everyone knows which you mean when you put "The" in front of them.
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