These people could help police solve the riddle of Simon Bampton's death.

Detectives want to speak to 12 potential witnesses to the road rage attack which left the 28-year-old glazier from Southampton dead.

Police have arrested and charged Mohammed Waqar, aged 21, from St Werburgh's, with Mr Bampton's manslaughter, but still need to speak to people who may have seen the late-night attack.

Officers have released the camera footage from shops around Marsh Street, where the incident happened on August 19.

A post-mortem examination revealed that a single punch caused the fatal injury to Mr Bampton, who was attacked as he walked with a friend along the side street connecting Baldwin Street and Broad Quay.

His attacker got out of a passing car and then sped off after punching him.

Mr Bampton was rushed by ambulance to the Bristol Royal Infirmary, but died the next day with his family and girlfriend at his bedside.

Police want to hear from anyone who saw the attack who has not already spoken to detectives in a bid to build the case in preparation for forthcoming court cases. Detective Chief Inspector Mike Courtier said: "These images are from CCTV and show people who were in and around Marsh Street at the time.

"We are keen to identify them as they may have important information to help police inquiries.

"All of the images were taken between 2.10am and 2.20am on Tues day, August 19. If you are pictured, or may recognise someone who is, I would ask you contact police as soon as possible."

Mr Bampton began working in Bristol as a glazier the week before his death, travelling home to Southampton each night.

His company decided to pay for him and his colleagues to stay in the city the week he was attacked.

It was as he walked back to a city centre hotel after a night out with colleagues that he was attacked.

His death was the second tragedy in a year for the family, following the death of Mr Bampton's mother, Jill, from a lung condition.

His girlfriend Natasha Matthews has previously spoken of how his death had affected her.

She said: "I feel like a part of me has gone with him."

The couple, who had known each other since school, had been together for six years and shared a flat in Southampton. They had been planning to buy a house together.

During a police press conference in the days following his death, Miss Matthews said: "I feel absolutely distraught by what has happened. I feel broken. It's not real yet.

"I keep going through his stuff at home. I can't unpack his work bag.

"I had the happiest six years of my life with him. There wasn't a day that went by when we didn't tell each other that we loved each other."

Anyone with information is asked to call Bristol CID on 0845 4567000 or Crimestoppers on 0800 555111.