The Prince of Wales joked with guests during a visit to Hillsborough Castle in Northern Ireland that he was “enormously grateful” for “coming such a long way to celebrate” his and Camilla’s wedding anniversary. Prince Charles spoke before unveiling a plaque to commemorate the £24 million refurbishment of the Georgian castle by independent charity Historic Royal Palaces in advance of its opening to the public later this month. Report by Blairm. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn