Prince Charles and the Duchess of Cornwall are set to meet This Morning presenters Phillip Schofield and Holly Willoughby.
The royal couple will have a tour of the ITV studios in London on Wednesday, where they will also be introduced to the hosts of Good Morning Britain and Lorraine.
Mr Schofield told viewers last week: “We’re also going to be asking them to sign – we’ve never done this before – our first visitors’ book, which is going to be filled with pictures and messages from all our guests.”
He added: “We’re going to take piccies on this camera, Polaroid, old school.”
This Morning, which celebrates its 30th anniversary this year, is Britain’s longest running daytime television show.
The royal couple will then attend a reception to celebrate the 90th anniversary of The Royal Television Society (RTS), of which Charles is a patron.
He will be given the RTS Gold Medal – the society’s highest accolade – in recognition of his support.
Charles and Camilla will meet young people who have benefited from the RTS bursary scheme.
Later, Charles will attend a meeting on plastics, where relevant stakeholders and business leaders will discuss how to keep the oceans healthy.
Charles, who is known for his support of environmental causes, will give a speech at the British Academy in central London.