The King’s constitutional work has continued, but the public outings were stopped.
His family has stepped up to support him, and protocols were in place should the need arise.
But it has been an incredibly challenging time for the House of Windsor.
News of the Princess of Wales’s cancer diagnosis a double blow for the family.
There remains a lot of uncertainty; the King won’t return to full duties, and his engagements will be adapted to reduce the risk while he recovers. There’s also no confirmation yet about the big set piece events like Trooping the Colour or an overseas state visit.
But this is a significant moment. And the King’s return to public work will start with a personally poignant visit, as he and the Queen meet patients and staff at a cancer treatment centre.