Why Andrew and Harry could have been asked to stand in for the Queen today
Many people will ask if there should now be a formal Regency, where the Queen stays Sovereign but Charles carries out all her functions.
Prince Of Wales
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Prince Charles and the Queen of Spain visit County Durham
The royal visitors opened the new Spanish Gallery in Bishop Auckland and viewed the art at Auckland Castle, as well as stopping at Darlington and Sedgefield.
Prince of Wales welcomes tour guides to garden estate ahead of spring opening
Charles walked among the daffodils and welcomed tour guides at Highgrove Gardens in Gloucestershire.