Prince Philip's royal service in numbers as he announces retirement
Video report by ITV News Correspondent Paul Davies
As the Duke of Edinburgh's announces his retirement, here is his royal service in numbers:
The first acknowledgement of Philip's advancing years came in 2010 when it was announced he would relinquish his association with a number of his charities on his 90th birthday the following year.
The Prince has travelled extensively across the world as part of his royal duties - including 229 visits to 67 Commonwealth countries, and 408 visits to 76 other countries.
Despite withdrawing from public contact with his charities and organisations, the Duke will still keep in touch via correspondence - like signing certificates and sending messages.