Unlike William, Kate is right handed but she is holding her pen in her left hand. Is the setup used to fully show her face (her skin looks very youthful and almost airbrushed here)?
The papers in her tray are blank, the top paper in her portfolio/folder is blank.
She isn't wearing the sapphire ring, unless it has been turned backwards.
The room isn't an office, it's their drawing room (think back to when the Obamas visited).
The books apparently include: Christmas Carol, Sense and Sensibility, Northanger Abbey, Mansfield Park, Tess of the D’urbervilles, Middlemarch, The Picture of Dorian Grey and Bleak House.
William's printer wires cover the cabinet drawers - was this brought in for the photo?Inquiring minds must know!
There's a red plastic bin in the bottom right hand corner of William's photo.
It would be funny if Kate and William were on the opposite sides of the same room.