Master Engineer Gary Nicholson, 42, from Hull, was one of 10 servicemen who died when their Hercules C-130 aircraft was shot down in 2005.

His mother Julia said:

"It will be a whitewash. I'm absolutely disgusted. I'm not going because it will be a whitewash. "Tony Blair has got blood on his hands. He will have covered his back and (George) Bush's back."

Janice Procter, whose son, Private Michael Tench, 18, from Sunderland, was one of the youngest British soldiers to die in Iraq when he was killed in 2007, said:

"It's been horrendous, I'm very apprehensive about this. "This man (Blair) has put 179 kids to the slaughter - there's no justice. It (the report) is not going to give me any closure or comfort. "I'm not going down on the day, I'm not going to waste two hours of my life reading it."

The father of Lieutenant Alexander Tweedie, 25, from Hawick in the Scottish borders who died in 2003, said he expected the report to be damning of Tony Blair.

Gavin Tweedie said:

"I'm hoping that Tony Blair is heavily criticised but more than that I don't know what to expect." "I think he (Mr Blair) will be but we have to wait and see."

Mr Tweedie said he was unable to make the trip to London but had asked for a copy of the report to be sent to him and his wife.

Sarah O'Connor, whose brother Sergeant Bob O'Connor was killed in action when his Hercules plane was shot down in 2005, said the length of time it had taken to complete the report made "a mockery of the inquiry system".

She said: