The SAS is facing calls for a probe into allegations a unit went 'rogue' in Afghanistan, killing unarmed civilians and attempting to cover up evidence.
The shocking claims were uncovered in an investigation by the Sunday Times.
The newspaper said senior military police and defence sources said there was 'credible' evidence of war crimes by the SAS.
The Ministry of Defence has said no evidence of criminal behaviour by British armed forces in Afghanistan had been found. Veterans also warned of a legal 'witch hunt' against UK troops.
According to the newspaper, which quoted sources from a Royal Military Police (RMP) investigation, there is "strong evidence" SAS personnel killed rather than captured unarmed civilians suspected of being Taliban insurgents during night raids on their homes.
Following the allegations, Jeremy Corbyn has called for an independent inquiry into the evidence.
The Labour leader said there is a risk the British armed forces' "reputation for decency and bravery" will be undermined unless the "extremely serious" claims are investigated.
If we do not act on such shocking allegations we risk undermining that reputation, our security at home and the safety of those serving in the armed forces abroad," he said.
"There can be no question of a cover up. The Government must now establish an independent inquiry into what has taken place."
In February, Defence Secretary Sir Michael Fallon announced 90 per cent of misconduct cases involving British troops in Afghanistan would be dropped, amid controversy over a discredited probe into Iraq war veterans.
The RMP investigation – named Operation Northmoor – was looking into almost 700 allegations of abuse, many of which came from the same law firm behind multiple claims in the discredited Iraq investigation.
A Ministry of Defence spokesman said the RMP had full independence over the direction of Operation Northmoor, adding: "The RMP has found no evidence of criminal behaviour by the armed forces in Afghanistan.
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“They have discontinued over 90 per cent of the 675 allegations made and less than 10 investigations remain. Our military served with great courage and professionalism and we proudly hold them to the highest standards. Where allegations are raised it is right they are investigated."
