The trial of 4 people and 3 companies commenced in February at The Old Bailey after the tragic death of a young lawyer back in 2012.
Amanda Telfer, 43, was killed when window frames due to be installed in a building in Hanover Square fell onto her as she walked past the building. The window frames had been left stacked up against a wall the previous day, unsecured, unrestrained and weighing a total of half a tonne.
Four people and three companies deny a total of 13 charges over her death.
Prosecutor Duncan Atkinson QC said builders were not ready to install the frames but that they were delivered anyway.
He said it was “obvious to anyone” that the heavy frames, which together weighed 1,444lb (655kg), carried a “clear and serious risk of death”, including to those walking past.
Mr Atkinson told the court: “There were a series of obvious and, in many cases, straightforward steps that could have been taken to avoid that risk, ranging from cancellation, delay, refusal of delivery on the one hand, to the storage, the use of straps and barriers.
“None were taken by any of the defendants and Amanda Telfer died as a result.”
The jury at the Old Bailey was told how another member of the public had almost been hit in a “near-miss” at the site just days before the fatal accident.
Work was “routinely carried out” on the pavement and equipment was stored there overnight, but there was no external barrier to separate the working area from the public, Mr Atkinson said.
“In the days before the accident, a plywood hoarding had fallen from one of the apertures on the building, almost hitting a member of the public as he made his way home.”
Mr Atkinson said the alleged incident raised questions over health and safety at the site.
Damian Lakin-Hall, 50, from Cobham, Surrey, Claire Gordon, 36, from Leeds, and 64-year-old Kelvin Adsett – also known as Kelvin Schultz – from, Slough, Berkshire, deny manslaughter and health and safety breaches.
Steven Rogers, 62, from Sawbridgeworth, Hertfordshire, pleaded not guilty to a single charge of failure to take reasonable care for safety while at work as an employee of Westgreen Construction.
IS Europe of Slough, Westgreen Construction, of Richmond in Surrey, and Drawn Metal of Leeds, also deny health and safety charges.