Yes, they list it on the site, it included medical, religion, and vaccine not available to you. I will find the information and link it.
edited to add, below info for UK sailing exemptions.
Princess Cruises continues to operate vaccinated cruises. For sailings from the United Kingdom and Europe, at least 95% of guests ages 12 years and older will be fully vaccinated. These cruises are available for guests who have received their final dose of an authorized/approved COVID-19 vaccine at least 14 days prior to the beginning of the cruise and have proof of vaccination, in accordance with local health guidelines. In addition, where local regulations allow, we are managing an exemption process for guests 12 and older, that supports medical, religious and other guest considerations.