Christmas Cake Ceremony, which commenced in 1949. It is a symbol of the enduring friendship between the UK and Australia and takes the form of a Christmas cake being presented to the hospital from the Australian Returned and Services League, with each Australian state taking it in turns year by year. Again, a pensioner at the Royal Hospital cuts the cake with a sword. Public opening and events The on-site museum details the history and life of the Royal Hospital and its In-Pensioners, together with displays of artefacts, documents, medals, cap badges and uniforms. Recent additions include the Sovereign's mace and Parade Chair. A large diorama depicts the Royal Hospital and Ranelagh Gardens as they appeared in 1742. Daily walking tours of the site and museum, led by Chelsea pensioners themselves, can be booked in advance. The South Grounds of the Royal Hospital are also used for large-scale public events including the world-famous Chelsea Flower Show, held by the Royal Horticultural Society. The show has been held in the grounds since 1913, and attracts around 165,000 visitors. In September 2022, the hospital served as the meeting point for foreign heads of state, leaders, and ambassadors to gather ahead of Queen Elizabeth's funeral. From there, the dignitaries traveled to Westminster Abbey by coach. Singora Cannon Prominently displayed in the grounds next to the flagpole is an inscribed cannon from Singora bearing the seal of Sultan Sulaiman Shah. The cannon was made in Singora around 1623, captured from the Sultanate of Singora by the Siamese in 1680, taken from the Siamese by the Burmese in the Burmese–Siamese war of 1765–1767 and transported to Burma. In the third Anglo-Burmese War (1885–1887) the cannon was taken by the British and shipped back to England. Organisation The hospital maintains a 'military-based culture which puts a premium on comradeship'. The in-pensioners are formed into three companies, each headed by a Captain of Invalids (an ex-Army officer responsible for the 'day to day welfare, management and administration' of the pensioners under his charge). There is also a Secretary who traditionally was responsible for paying the Army pensions, but today they look after the annual budget, staff, buildings and grounds. Further senior staff include the Physician & Surgeon, the Matron, the Quartermaster, the Chaplain and the Adjutant. A Board of Commissioners has governed the Royal Hospital since 1702. The ex-officio chairman of the board is HM Paymaster General