A former care worker from Nottinghamshire who fought against the Islamic State terror group faced arrest on his return.
Newark MP Robert Jenrick revealed his constituent Aiden Aslin had joined foreign fighters taking on the group in Iraq and Syria.
But the Conservative also told Parliament Mr Aslin was arrested and questioned by police when he arrived back in the UK.
The story emerged as Mr Jenrick made an appeal in the Commons for a change of policy on those who volunteer to fight against so-called Islamic State, also known as IS or Daesh.
Mr Jenrick told the house: “Hundreds—probably more than 1,000—British nationals have taken the very brave decision to go and fight against Daesh in Syria and Iraq, joining the YPG 2and the foreign fighter forces of the Kurdish peshmerga.
“Those people include my constituent, Aiden Aslin, a former care worker from Newark.
“It is now Home Office and police policy to arrest these individuals under counter-terrorism legislation on their return to the UK.
“Even if, as is most likely, they are not charged, that will remain on their record, and constituents such as mine, who have taken an extremely brave decision—one could argue that it is foolhardy, but it is extremely brave—to fight with our allies, will not be able to, for example, enter the United States for the rest of their lives.”
Responding to his request on Thursday, fellow Conservative MP Chris Grayling, leader of the House of Commons, said he would raise the issue with Home Secretary Theresa May.
Fighting for pro-Kurdish groups could be interpreted as a breach of current terrorism legislation, even if a person’s motive was to fight against IS.
However, despite arrests, it understood no-one has yet been charged after travelling solely to fight against the group.
The development follows the death in March last year of former Nottingham student Kostandinos Erik Scurfield, 25, while fighting IS with the Kurdish People’s Protection Units.