Royal baby watch begins anew today as Prince William and Kate, the Duke and Duchess of Cambridge, have announced that they are expecting their third child.

The news came direct from Kensington Palace this morning in an announcement made on social media accompanied by a brief press release.

The announcement comes as Kensington Palace reveal that Middleton is once again suffering from Hyperemesis Gravidarum, a complication from pregnancy that results in extreme nausea and vomiting, and as such will no longer be carrying out her planned public engagements today and probably for the immediate future.

The release also stated that "the Queen and members of both families are delighted with the news".