| UPDATED: 20:54, Wed, Jan 27, 2021 Link copied Sign up for FREE now and never miss the top Royal stories again. SUBSCRIBE Invalid email When you subscribe we will use the information you provide to send you these newsletters. Sometimes they'll include recommendations for other related newsletters or services we offer. Our Privacy Notice explains more about how we use your data, and your rights. You can unsubscribe at any time. Prince Philip is understood to "amused" at the revelation his old nickname from the 1950s and 60s is similar to the Palace's codename for its coronavirus measures for himself and the Queen. The codename was created as royal aides scrambled to set up protections for himself and the Queen during lockdown, royal commentators have revealed. The experts spoke to Channel 5 documentary, 'Secrets of the Royal Palaces', about the Royal Family's extra line of defence.