The King has recorded a heartfelt tribute to his "darling Mama" to mark the centenary of her birth but said much of much of life today would likely have "troubled her deeply".Charles' video message in tribute to the nation's longest-reigning monarch describes how "she remained constant, steadfast and wholly devoted to the people she served".

The King has recorded a heartfelt tribute to his "darling Mama" to mark the centenary of her birth but said much of much of life today would likely have "troubled her deeply".Charles' video message in tribute to the nation's longest-reigning monarch describes how "she remained constant, steadfast and wholly devoted to the people she served".