Article Photos: UK queen celebrates Commonwealth Day after illness 1/5

Britain's Prince Philip, center, the husband of Britain's Queen Elizabeth II, walks in a procession at the start of the Commonwealth Day Observance at Westminster Abbey in London, Monday, March 11, 2013.  Taking place annually on the second Monday in March, the Commonwealth Day Observance has a different theme every year, with the 2013 focus on âOpportunity through Enterprise.â  Britain's Queen Elizabeth II, who is the head of the Commonwealth, was due to attend the event, but cancelled as she continues her recovery after a brief illness.  (AP Photo/Matt Dunham-Pool)