Irish and UK leaders will take part in several commemorations today for Remembrance Sunday, marking the 100th anniversary of the outbreak of First World War.
For the first time since 1946, the Irish ambassador to Britain will lay a wreath at the London Cenotaph to honour all those who died in the conflict.
Elsewhere, Taoiseach Enda Kenny will take part in an event at the war memorial in Enniskillen, while the Tánaiste will attend a Remembrance service at St Patrick's Cathedral.
The Minister for Foreign Affairs Charlie Flanagan will lay a wreath at the Belfast Cenotaph, where he will be joined by the North's First Minister Peter Robinson.
Minister Flanagan welcomed Ireland's official participation in the London event:
David Cameron said this year's events were "particularly poignant" because 2014 marked a century since the start of the Great War, the 70th anniversary of D-Day and the end of UK involvement in Afghanistan.
The Queen will be joined at the Cenotaph by the Duke of Edinburgh, the Prince of Wales and Duchess of Cornwall and the Earl and Countess of Wessex.
It is reported that "appropriate and proportionate" policing is in place in London amid heightened fears of a terror attack, Scotland Yard said.
Officers have also been granted seven more days to hold four men arrested in west London and High Wycombe on Thursday.
They were detained over an alleged Islamist terror plot, but it has not been confirmed whether Remembrance Day was a potential target.
The Cenotoaph ceremony will feature a procession of current and former servicemen and women.
Meanwhile public calls for the Tower of London's ceramic poppies to stay in place for longer have also been heeded.
The Wave section of the artwork, which surrounds the entrance to the Tower, will stay in place until the end of the month.
Along with the Weeping Willow section - which spills out from a window to the moat below - both will then go on a tour of the UK until 2018.
The 888,246 poppies represent a British or Commonwealth military death during the 1914-18 war and have drawn millions of visitors to the site.
David Cameron and wife Samantha visited on Saturday and added two more poppies to the sea of red.
The Prime Minister said the British people stood united "to remember the courageous men and women who have served our country, defended our freedoms and kept us safe.
"We remember all those who have fallen and those who have risked their lives to protect us. We owe each and every member of our armed forces and the families who support them a tremendous debt - one that can never be repaid - and I pay huge tribute to their bravery and resolve."
Mr Cameron has also announced plans for a £1m (approx €1.27m) national memorial to the servicemen and women who have served in Iraq and Afghanistan.
Originally posted at 7.24am
