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The scene is as far fetched as the plots in Doctor Who - a prince, a duchess, a doctor and some Daleks... Charles and Camilla were on the stage set in Cardiff. Kate Fisher reports.
The Prince of Wales and the Duchess of Cornwall met Doctor Who star Matt Smith during a visit to the set of the BBC series Doctor Who.
They also met the man behind the voice of the Daleks - and the prince took the microphone to have a go at some "exterminating" himself:
The Prince of Wales and The Duchess of Cornwall could hold an unusual photo call with a horde of Daleks during a visit to the set of the BBC series Doctor Who.
They will meet members of the cast and production team as they look around the set of the worlds longest running science fiction series.
Doctor Who will celebrate its 50th anniversary this year on 23 November with a 3D special featuring a return of the Tenth Doctor, played by David Tennant.
The visit forms part of the Royal couple's annual trip to Wales - where they stay for a week at their holiday home in Llwynywermod, near Llandovery.
The Prince of Wales and the Duchess of Cornwall will continue their tour of Wales today with a visit to Rhug Chapel in Corwen, Denbighshire. The 17th century chapel was built by Colonel William Salesbury, who held hold Denbigh Castle for the Royalists during the English Civil War.
They will also visit Rhug Estate Farm Shop and Llwyn Isaf Anaerobic Digestion plant in Caernarfon.
The Prince of Wales and the Duchess of Cornwall have begun their annual summer tour of Wales. They've been visiting the last home of Dylan Thomas at Laugharne in Carmarthenshire. It's where he wrote one of his most famous works, Under Milk Wood.
The Prince of Wales, Patron of the Dylan Thomas 100 Festival and The Duchess of Cornwall are meeting museum staff and local school children during a visit to the poet's last home, the Dylan Thomas Boathouse in Laugharne.
Thomas lived at the Boathouse with his wife Caitlin and their children, Aeronwy, Llewelyn and Colm from 1949 to 1953 - the last four years of his life.
During this time he wrote many major pieces of work, including Under Milk Wood. The Boathouse is now a heritage centre.