A British man who went to Syria to fight against the so-called Islamic State terror group has branded the Government's lack of support for Kurdish forces "shameful".

The fighter, a 28-year-old former currency trader from Battersea, wants the UK to take part in the US-led air strikes in Syria that help Kurdish militia battling IS in the north of the country.

Having contacted the Kurdish militia group YPG using Facebook, Harry - who did not want his full name revealed to protect his identity - took part in a dangerous operation against IS earlier this year where forces discovered a major bomb factory and captured one of the terrorist group's regional headquarters.

He fought alongside Kurdish women and men with limited equipment, many of whom have since died trying to liberate the area near the Turkish border from IS.

Harry said: "The British government's policy is a tragedy, it's absurd - in fact we don't have a policy at all. What is Britain doing? This is an international war. Air support in the fight against Isis is absolutely crucial. I find it shameful that Britain isn't doing more. "

Harry said that since the Iraq war, there has been little public appetite for military intervention in the Middle East.

He added: "I'm not advocating British troops on the ground and that's what is so frustrating - the answer to the Syrian conflict is already there.

"I have been meeting members of the British government and all they are talking about is Iraq: 'Oh, we are bombing Iraq, we are doing this, we are doing that, we are building refugee camps.' It's all in Iraq.

"But all the biggest problems are in Syria - the most casualties, the most genocide - and that is not where the help is going."

In 2013, MPs rejected UK military action in Syria. However, the EU refugee crisis has seen the debate reopened and the Government is expected to draw up proposals to extend air strikes to the war-ravaged nation in the coming weeks.

But he said: "In David Cameron, I see a very domestic Prime Minister, someone who is far more concerned with domestic politics, dealing with the budget deficit and remaining popular with Joe Public than spending political capital on something like this.

"What we need at the moment, what the world is crying out for - not just Britain but the world - is a wartime prime minister.

"This tragedy is becoming Biblical in its proportions. What we need is a prime minister who recognises the crisis in Syria and gets things done."

Harry is featuring in the Channel 4 documentary Frontline Fighting: The Brits Battling Isis, alongside other Britons who have been left frustrated by what they see as the country's inaction and decided to travel to Syria to fight with Kurdish forces.

The film follows Jac, a 22-year-old former IT worker from Bournemouth, and Jim, a 40-year-old former soldier from Stoke on Trent, as well as Harry, as they take part in a major operation to re-capture the Abdul 'Aziz mountain range. They are part of a band of foreign volunteers known as the Lions of Rojava.

Both Jac and Jim have since returned to Iraq and Syria respectively to continue the fight, but Harry says he has chosen to stay in the UK to try and highlight the plight of YPG.

He said: "The Kurds are the only group that truly believes in secular democracy, in human rights, equality, even gay rights - and that's something very rare in the Middle East."