A MAN who was stabbed on an Oxford estate six months ago is angry his attackers have still not faced justice.

He has spoken of his constant pain since the attack, in a bid to find new witnesses.

Roy Sinclair, 39, from Windrush Tower, Blackbird Leys, suffered a punctured lung and kidney when he was knifed twice outside his home in August last year.

The father-of-two needed two emergency operations to his kidney following the stabbing and spent a fortnight in hospital.

He said he was jumped from behind by a group of teenagers who were talking to his niece.

The builder said he was also in anguish over a decision by the police to release three boys without charge, despite the fact officers are convinced the suspects were responsible for the attack.

Mr Sinclair said: "I feel very bad about it. I feel 100 per cent let down by the police. I don't feel any justice has come out of it. When I got stabbed, I felt like I was going to die. I was fighting for my life. I fought to survive.

"I couldn't move for two weeks. My kids were crying when they came to speak to me at the hospital.

"Now I feel in pain all the time. At the moment I have to force myself to work. Sometimes I can't get up when I bend down to pick things up because my back hurts so much."

Three youths, aged 13, 15, and 16, were arrested on suspicion of causing grievous bodily harm within days of the attack. They were released without charge. No one else has been arrested.

Det Sgt Russell Simpson, who led the investigation into the incident, said: "The police are satisfied that the people arrested were responsible for the incident in which Mr Sinclair was stabbed.

"The difficulty we've had, is the witnesses to this awful attack gave conflicting statements which undermined the prosecution.

"I do feel really sorry for Mr Sinclair, and I've told him that.

"If he feels let down because he wants justice, I agree. I share Mr Sinclair's sense of injustice.

"I cannot make up the evidence. I can only present what I have got. If it's insufficient or conflicting I cannot present it.

"There is no chance of securing a conviction without anyone else giving us any evidence."

Any witnesses should call Det Sgt Simpson on 0845 8505505 or Crimestoppers on 0800 5551111.