A Slough man whose negligence led to a young woman's death was sentenced on Friday to 12 months imprisonment.

Kelvin Adsett, 64, of New Road, Slough was convicted at the Old Bailey on Thursday, March 23 of manslaughter by gross negligence as well as offences against the Health and Safety at Work Act.

Lawyer Amanda Telfer, 43, was crushed to death on Thursday, August 30, 2012 in Mayfair when three large unglazed window frames, together weighing 655kg, fell on her.

They had been left on the pavement leaning against the building. No efforts were made to secure them and no barrier placed around them.

As Miss Telfer - a freelance intellectual property and media lawyer - walked past, it is believed a door in the building blew open in the wind hitting the frames and causing them to topple crushing her underneath.

Adsett received a 12 months sentence for manslaughter, nine months for the Health and Safety offence - to run concurrently.

He was working for IS Europe Ltd, also of Slough, which was also convicted of health and safety offences. The company was fined £100,000 but the court heard its accounts only contained £250.

Adsett's colleague Damian Lakin-Hall, 50, of Portsmouth Road, Cobham, Surrey had been convicted of offences contrary to the Health and Safety at Work Act. He was sentenced to six months' imprisonment, suspended for two years.

Miss Telfer's death was investigated by the Met's Homicide and Major Crime Command with the assistance of the Health and Safety Executive.

Detective Chief Inspector Andrew Chalmers said: "Amanda's death was completely avoidable and it is only right that those who failed in their duty have been held to account."

Barry and Ann Telfer, Amanda Telfer's parents, said following the verdict: "We don't want retribution for our loss of Amanda, though we will never recover from it. We want accountability established, responsibility acknowledged.

"Her death was avoidable. She was killed by two half-ton window frames which had been left standing at the side of a busy public pavement unsecured, unbalanced and unattended with no safety barriers round them."