Nigel Farage has revealed “the establishment” prevented him from laying a wreath at the Cenotaph on Remembrance Sunday.
The Reform UK leader was told only party leaders with at least six MPs can take part in the ceremony.
And Mr Farage’s deputy, Richard Tice, branded it a “shameful stitch up”.
Prime Minister Sir Keir Starmer, Conservative leader Kemi Badenoch, Liberal Democrat Sir Ed Davey and SNP Westminster leader Stephen Flynn all laid wreaths in Westminster on Sunday.
Gavin Robinson, the leader of the DUP, also laid a wreath despite his party only having five MPs.
But this is understood to be because each of the United Kingdom’s four nations must be represented in the ceremony.
Government sources later pointed to an addendum to the 1984 protocol, which stipulates that “the party with the most sitting MPs from each of the devolved nations should be given the opportunity to lay a wreath” even if the party has fewer than six seats.
Prime Minister Sir Keir Starmer will attend a remembrance event in France today – the first British leader to do so since Sir Winston Churchill.
The Prime Minister is attending commemorations across the Channel to mark “a special year” and the “close relationship” between London and Paris, Defence Secretary John Healey said.
Mr Healey added that Sir Keir’s visit to France to commemorate Armistice Day is a reminder that “we can never take the freedoms we enjoy in Europe for granted”.
The Prime Minister is the first to visit France for Armistice Day since Winston Churchill joined Charles de Gaulle in 1944.
Asked why Sir Keir was making the trip, Mr Healey told Sky News: “This is a special year.
“We mark 80 years D-Day invasions and some of the critical battles that liberated Europe and ended the Second World War.
“This is also a mark of the close relationship between the two leaders, between (President Emmanuel) Macron and Starmer, but also the historic bonds between our two countries and our two militaries.”
He added that the visit was “very fitting” and a reminder that “we can never take the freedoms we enjoy in Europe for granted”.