The Duke and Duchess of Edinburgh are often regarded as some of the Royal Family ’s safest pairs of hands, quietly keeping up with duty and being an invaluable support for the King. And Prince Edward and Sophie proved this to be the case yet again, representing Charles on a landmark tour of Portugal last week to celebrate the UK’s ties with the country. The couple spent three days in Lisbon and Porto carrying out a string of engagements, with many reflecting causes close to their heart, such as