Prince Charles is to take on more of the Queen's duties abroad as she prepares for her 90th birthday next year.
The Queen, who will become Britain's longest reigning monarch next week, is said to have remarked during a discussion about her schedule: "I think I've done my bit, don't you?"
The prince - who is the country's long serving heir apparent - will have undertaken seven foreign tours in just 11 months by the end of November, taking in 11 different countries.
Sources say he has another seven already pencilled in for 2016 - including visits to the Middle East and Ireland, and at least two long-haul trips.
The Queen has privately made it clear that her days of foreign travel are numbered, although she will attend the forthcoming Commonwealth Heads of Government Meeting in Malta in November.