The fifth member of a stag party who died in a crash on the M25 has been named as musician Rohan Chadwick, 27.
Andrew Graney and Rohan Chadwick were among five friends killed
Mr Chadwick was among six friends from Brighton travelling in a rescue truck after their minibus broke down on the way home from a stag weekend.
Police investigating the crash on the M25 in Surrey on Monday are waiting to speak to the survivor from the party, Benjamin Pert, who is in hospital.
The driver of the vehicle, who also died, is yet to be formally identified.
Mr Pert, who is in a stable condition in the Queen Victoria Hospital at East Grinstead, West Sussex, has undergone surgery for facial injuries.
Another seven members of the stag party, including the groom-to-be, had been taken home in a separate vehicle after the minibus broke down on the M1.
Four of the victims have already been identified as doctor Christopher Janaway, 28, Jon Chandler, 26, Andrew Graney, 29, and doctor Matthew O'Donnell, 30, all from Brighton.
Mr Graney's family released the first picture of him on Wednesday.
All six men were in the cab of a recovery vehicle which collided with a lorry.
Chris Janaway, Jon Chandler and Matthew O'Donnell were killed
The HGV driver was uninjured in the accident.
Surrey Police said officers had already spoken to Mr Pert briefly, but would interview him in more detail as a witness when he was fit and well.
The group had spent the weekend in Leicestershire celebrating the impending wedding of James Forrer.
He said the loss of "five beautiful friends" had left all those who knew them "inconsolable".
"I'm so grateful that we were all able to share a terrific weekend's celebration that was filled with laughter," he said in a statement.
"Coming to terms with a loss of such magnitude will require much time and energy, and the warmth and love of all of the families and friends involved."
Mr Forrer said he and his fiancee had yet to decide whether to postpone their wedding.
Peter Coles, chief executive of Brighton and Sussex University Hospitals NHS Trust, paid tribute to Dr Janaway and Dr O'Donnell and said they were both "popular and highly respected".
Dr O'Donnell joined the trust last August and worked in cardiology and accident and emergency.
Dr Janaway joined at the same time and worked in anaesthetics for six months before moving to A&E at the Royal Sussex County Hospital in Brighton.