Charles wrote a personal message reflecting on his diagnosis and praising the work of cancer charities, ahead of hosting a Palace reception.

New guidelines from the independent Sentencing Council were scheduled to come into force earlier this month but were delayed.

The Prince and Princess of Wales chatted to the celebrity as they ended their two-day visit to the Scottish isles.

Economy minister Yulia Svyrydenko is currently in Washington for the final co-ordination of the agreement’s technical details, sources said.

Sir Paul, 82, has written a foreword for the book, which is being published in November, and says: “Suddenly Wings has found its moment. We have a generational shift at work, and it’s like being ...