Seventeen former British soldiers will find out today if they are to be charged in relation to the 1972 Bloody Sunday massacre in Derry.

The men have been told they may face trials for murder, attempted murder and causing grievous bodily injury with intent to endanger life if prosecutors in Northern Ireland believe there is enough evidence against them.

Charges may also be brought against two former Official IRA members involved in the day’s bloodshed.

Fourteen people were killed and at least 15 more wounded when British paratroopers opened fire against what was classed as an illegal civil rights march through the border city on 30 January 1972.

Representatives of the soldiers – who have never been publicly identified – insisted they only started shooting after fearing they themselves were about to come under attack from the 30,000 strong crowd.

Remembering The Troubles in pictures Show all 15 1 /15 Remembering The Troubles in pictures Remembering The Troubles in pictures A British soldier attacks a protester in Derry on Bloody Sunday Getty Remembering The Troubles in pictures The Northern Ireland Civil Rights movement marches in London in 1968 to demand the same voting rights afforded to the rest of Britain Getty Remembering The Troubles in pictures The Northern Ireland Civil Rights Association marching on the streets of Derry in 1968 BBC Remembering The Troubles in pictures The Battle of the Bogside in Derry in August 1969 was among the first violent episodes of the Troubles The Battle of the Bogside in Derry in August 1969 was among the first violent episodes of the Troubles Getty Remembering The Troubles in pictures British soldiers take cover behind their armoured cars as they use CS gas to disperse rioters in Derry on Bloody Sunday PA Remembering The Troubles in pictures Hugh Gilmore (third left) clutches his stomach after being shot by a British soldier on Bloody Sunday. Gilmore was one of 14 to be shot dead on 30 January 1972 PA Remembering The Troubles in pictures A man receives attention after being shot on Bloody Sunday in Derry PA Remembering The Troubles in pictures A young man is led away by paramedics after being injured on Bloody Sunday PA Remembering The Troubles in pictures The British Embassy at Merrion Square in Dublin is bombed following a march to protest three days after the Bloody Sunday shootings Getty Remembering The Troubles in pictures Independent MO for Mid-Ulster Bernadette Devlin talks to the press after she hit Home Secretary Reginald Maudling for lying about the Bloody Sunday shootings in his statement to the House of Commons the day after the incident. Devlin had been in Derry at the time of the shootings and was moved to strike the Home Secretary after he claimed that British soldiers had only fired at protesters in defence Getty Remembering The Troubles in pictures Members of a Catholic community in Newry stage a protest against the Bloody Sunday shootings AFP/Getty Remembering The Troubles in pictures Relatives mourn over the coffin of a victim of Bloody Sunday on 1 April 1972 Getty Remembering The Troubles in pictures Thousands attend the annual Bloody Sunday memorial march in Derry on 30 January 1995 PA Remembering The Troubles in pictures UK prime minister Tony Blair and the Irish taoiseach Bertie Ahern sign the Good Friday Agreement in 1998 PA Remembering The Troubles in pictures A view over residential Derry in 2019 shows a mural on Rossville Street, where soldiers opened fire on Bloody Sunday Getty

But initial official attempts to suggest the dead had been armed with guns or nail bombs were dismissed in what became the longest-running and most expensive public inquiry in British history.

The Saville Inquiry, which lasted 12 years and ran to millions of words, concluded in 2010 that the killings had been "unjustified and unjustifiable" – a finding which first opened up the possibility of criminal charges being made against the veterans involved.

In a statement to the Parliament at the time, then prime minister David Cameron unreservedly apologised to the families of the victims.

A police inquiry was subsequently launched against 20 suspects – 18 former members of the 1st Battalion of the Parachute Regiment, as well as two former "Official IRA" members – although one soldier has since died.

The complex investigation took in 668 witness statements as well as numerous physical exhibits including photographs and audio recordings before files were passed to the Public Prosecution Service of Northern Ireland.

Reacting to the news that a decision on charges was imminent, families of those killed said they had spent almost half a century searching for justice.

John Kelly, who saw his 17-year-old brother Michael killed that day, told The Guardian: “He would have been 64 had he lived. Those soldiers have to face the consequence of what they did. I believe they should get a life sentence. None of them have ever shown any remorse, not at the Saville Inquiry or since.”

The 70-year-old added: “I was with Michael when he was shot. I went in the ambulance with him. I can still see him lying there. He was a young boy. His face turned grey and a sort of green colour. I was in the mortuary afterwards. There were nine or 10 bodies. It was pure carnage. My mother never got over the loss of her son.”

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In a letter to MPs pre-empting the announcement of the potential charges, the Ministry of Defence said, if any were brought, it would fund the defence bills of the veterans – most of who are thought to be in their 70s and 80s.