The remaining two members of motorcycle gang The Outlaws have been found guilty of the murder of Hell's Angel Gerry Tobin as he made his way from a Warwickshire biker festival.
Karl Garside, 45, and Ian Cameron, 46, both from Coventry, were found guilty by a 10-2 majority verdict of killing Mr Tobin, who was shot dead on the M40 motorway in Warwickshire in August last year.
Mr Tobin, 35, from Mottingham, south east London, died almost instantly when he was shot as he rode along the M40 at about 90mph on August 12. He had been attending the Bulldog Bash festival at Long Marston, near Stratford-upon-Avon.
The trial had been told that he was targeted simply because he was a "fully-patched" Hell's Angel by members of the Outlaws South Warwickshire chapter.
Karl Garside and Cameron were both cleared by the jury of possessing a shotgun.
Jurors, who had been deliberating for eight days, convicted four other members of the Outlaws biker gang of the murder of mechanic Mr Tobin earlier this week.
Simon Turner, 41, from Nuneaton, Warwickshire, and Dane Garside, Karl Garside's 42-year-old brother from Coventry, were found guilty on Monday of killing Mr Tobin and possessing a firearm with intent to endanger life.
Malcolm Bull, a 53-year-old road sweeper from Milton Keynes, and Dean Taylor, 47, from Coventry, were found guilty of murder and possessing a shotgun on Tuesday and Wednesday.
A seventh defendant, 44-year-old Coventry man Sean Creighton, pleaded guilty to murder and firearms charges before the trial began. They will all be sentenced on Friday.
Mr Tobin's mother cried silently as the final verdicts were returned.
Two separate shots were fired at Mr Tobin, described in court as a law-abiding citizen, from two different handguns as he returned to his London home from the biker festival.
Both Creighton and Turner, the gang's president and sergeant-at-arms, opened fire from a Rover car which had pulled alongside the victim's Harley Davidson. One of the bullets skimmed the base of Mr Tobin's helmet, lodging in his skull and killing him instantly.
Another round, apparently aimed at the bike's rear tyre, passed through a mudguard and was never found despite extensive forensic searches.
Timothy Raggatt QC, prosecuting, told the Birmingham Crown Court trial that the fatal shot was fired as both Mr Tobin and the two gunmen, who were both mechanics by trade, sped along the M40 at about 90mph.
The "thoroughly cold-blooded" killing followed three days of "scouting" by the seven gang members, the entire membership of the South Warwickshire chapter of the Outlaws.
Dane Garside, a lorry driver and father-of-seven, was at the wheel of the Rover and manoeuvred the vehicle so the fatal shot could be fired.
Three other defendants - Karl Garside, Taylor and Cameron - acted as "back-up" on the day of the murder, patrolling the M40 in a white Range Rover.
Bull, driving a Renault Laguna, was also in the area when Mr Tobin fell victim to the "military-style" operation.
Mobile telephone evidence proved that the occupants of the Rover contacted the "units" in the Range Rover and the Renault and ordered them to stand down moments after the murder.
All seven men returned to the Coventry area and the Rover was set alight in a country lane north of the city.
On the opening day of the trial, Mr Raggatt told the jury: "The incident was a thoroughly ruthless one, executed with great skill and precision, great timing... and was the product of a great deal of planning."
There was not a scrap of evidence, Mr Raggatt said, that any of the murderers had ever met Mr Tobin. The bullet which killed him was fired from a revolver, while
a cartridge case found near his body was discharged from a self-loading pistol. A firearms specialist told the trial that the bullet recovered from Mr Tobin's skull was a 9mm Luger round coated with a jacket of nickel-plated steel.
Creighton, Turner and Dane Garside waited in a lay-by near junction 15 of the M40, near Warwick, before selecting the Hell's Angel for "execution".
Parwel Lec, who was travelling in convoy with Mr Tobin, told the jury that the biker had pulled over into the middle lane to allow the Rover to pass. He said: "There were two shots fired... the car drove off and it looked like nothing had happened to Gerry.
"We were driving as if nothing had happened and after a very short time - two or three seconds - I noticed that Gerry let off the handles of his bike and fell underneath the wheels of my bike."
Speaking at a press conference after the trial, Gerry Tobin's mother Maria Hutton, 54, who had flown over from the family's native Canada for the trial, paid an emotionally charged tribute to her son.
He was a man of dignity, compassion and loyalty, she said, who loved animals and cared deeply for his grandparents. As a child he frequently requested "world peace" as a Christmas present, she added.
Fighting back tears, she said: "Physically taken from us all, no longer does my son walk this earth among us and it is our loss, it is our great loss.
"Gerard Michael's life was heinously taken and the reasons why are embedded in our minds and etched in our hearts. For what? A patch of clothing. I'm going to say it again, for what? For a patch of clothing this beautiful man's life was taken.
"They didn't even know him, he was randomly chosen. Polar opposites had met, Gerard Michael, 'Gentleman Gerry', and the personification of evil on the M40 on the 12th of August 2007."
Mr Tobin's fiancee Rebecca Smith, told the press conference: "I would like to take this opportunity to express my gratitude to the members of the public who were so shocked and saddened by Gerry's death that they took the time to send messages of love, support, prayers and condolences to me and Gerry's family in the days and months that followed Gerry's tragic and untimely death.
"I am grateful for the love and support throughout the trial and I send my thanks and prayers to them and their families. I would also like to thank those travelling on the M40 at the time of Gerry's death who tried desperately but unfortunately in vain to save his life.
"My thoughts are with you and hope the nightmare of what you witnessed will no longer haunt you.
"I would like to thank my family, including all members of the Hell's Angels Motorcycle Club, who have supported and carried me through this nightmare from the start.
"They have never failed to pick me up when I have been at my lowest. I give
special thanks to Warwickshire Police, the Crown Prosecution Service and the jury who worked tirelessly to apprehend and bring to justice those who so violently, pointlessly and in such a cowardly way took from this world a true angel."
In a statement released following the verdicts, David Robinson, Chief Crown Prosecutor for Warwickshire, described the killing as a "carefully and ruthlessly planned ambush".
He said: "Simon Turner and his co-defendants, all members of a gang called the Outlaws, carefully planned the murder of Gerald Tobin not for any personal reason but simply because he was a member of a rival gang, the Hell's Angels.
"This was not a random killing but the result of a cold-blooded, premeditated, almost military plan which was put into place with great precision.
"Although two men fired shots at Gerry Tobin, the prosecution case was that the seven defendants carried out his murder in a joint enterprise and each of them played an important part before, during and following his death.
"Gerry Tobin was a thoroughly peaceful, well-liked and hard-working man who had a passion for motorbikes. He was a complete stranger to every one of the defendants.
"This was an horrendous murder committed by people with no regard for human life. It was a carefully and ruthlessly planned ambush.
"The mere fact that he was part of this rival group and on his way back to the Bulldog Bash, a weekend festival for Hell's Angels, was seen by the Outlaws as a valid reason for them to end his life.
"We are grateful to those people who came forward to give evidence. We were then able to provide them with support in court by way of special measures to screen them from the accused and the public gallery and, in some cases, through the making of witness anonymity orders.
"Our thoughts now are with Mr Tobin's family."
Detective Superintendent Ken Lawrence, who led the investigation for Warwickshire Police, said: "I express my sympathy and that of my colleagues to the family of Gerard and his partner.
"They have been through a hell of an ordeal."
Mr Lawrence said Mr Tobin's family and his partner, Rebecca Smith, had dealt with the "traumatic" experience of hearing evidence in the trial with "great dignity".
"I am pleased with these verdicts. The crime itself going back to August last year in my view was a callous, cold-blooded murder committed by these defendants who have never even met Gerry, let alone knew him."
Mr Lawrence said the defendants had shown a "total disregard" for public safety on the day of the shooting.
"This horrific crime was committed on a busy motorway in the summer," he said. "That in itself demonstrates the mindset and callousness of these individuals.
"Throughout the trial it is accurate to say they have shown absolutely no remorse. They have given evidence, most of them, and throughout that process I have seen no evidence of regret or remorse by any of them.
"Warwickshire is one of the smallest forces in the country but I think today in particular does demonstrate our ability to take on and bring to a successful conclusion an inquiry of this size and magnitude.
"This is the result of a very big and co-ordinated team effort."