Great Britain holds a public ceremony every year on Remembrance Sunday, to honor British military who died in past wars. Remembrance Sunday is always the Sunday closest in the calendar to November 11, the date of the World War I armistice. Apparently, in 1984, a policy was implemented that leaders of political parties with at least six members of the House of Commons are permitted to lay a wreath. But, no one can find the writing that implemented this policy.
The UKIP, the party that polled the third highest number of votes in this year’s House of Commons election, does not have as many as six members in Parliament, and it has complained. See this story. UKIP asked the Queen to intervene, but she said it is up to the government to decide.