King Charles III began his first speech as monarch by recalling the pledge made by his mother on her 21st birthday in 1947. Speaking from Cape Town on the occasion of her 21st birthday, Princess Elizabeth declared ‘before you all that my whole life, whether it be long or short, shall be devoted to your service and the service of our great imperial family’. She ended by saying: ‘God help me to make good my vow and God bless all of you who are willing to share in it.’ We know now that the Queen was given a long life during which the world, as it was when she was 21, was transformed. Cape Town is now part of an independent post-apartheid South Africa. The Empire dissolved, to be replaced by a Commonwealth. As the world shifted, the Queen embraced new themes but her commitment to ‘sacrifice and service’ remained constant.