Queen's funeral: Service of remembrance taking place at Royal Hillsborough Fort
Parks and civic buildings across Northern Ireland are also to air live feeds of the Queen's funeral.
A service of remembrance is taking place at Royal Hillsborough Fort in Co Down ahead of the funeral of the Queen.
The service features the Hillsborough Fort Guard, a ceremonial unit of warders dressed in navy tunics and white breeches.
Bugler Andrew Carlisle, who wears a scarlet tunic, sounded the call to begin the ceremony.
The Co Down village is home to Hillsborough Castle, the royal residence in Northern Ireland, and has been the focus of much of the outpouring of grief in the region since the death of the Queen.
Tens of thousands of people have visited Royal Hillsborough in the last 10 days, with many leaving floral tributes at the front of the castle gates.
A large screen has been erected on the lawn of St Malachy's Parish Church where people will gather later to watch the funeral live.
Sinn Fein vice president Michelle O'Neill tweeted: "Today I respectfully join leaders from Britain, Ireland & the international community at the funeral of Queen Elizabeth II as she is laid to rest.
"It is a sad day for her family who mourn her loss, and all those of a British identity from across our community who grieve also."
Parks and civic buildings across Northern Ireland are to air live feeds of the Queen's funeral.
Large screens are being brought in to broadcast the funeral procession and service at Westminster Abbey, expected to start at 11am.
Belfast City Hall and other venues across Northern Ireland are setting up big screens so people can gather to watch the state funeral together.
Coleraine Town Hall will be airing proceedings from 8am, while the People's Park in Ballymena and Shaftesbury Park in Carrickfergus are streaming the feed from 9.30am.