For three weeks, the nature programme will be based at RSPB Cymru's 700 hectare Ynys-hir reserve near Machynlleth, with the backdrop of the Cambrian Mountains.

BBC: Ynys-hir nature reserve (Andy Hay RSPB images)

Mr Raw added that his farmhouse had "never looked cleaner" in preparation for the visit and that he would be taking the prince up into the Cambrian Mountains to see his ewes and cattle before the meeting.

BBC: Prince's painting to help farmers