AN eyewitness to an alleged health and safety failing at an Oxfordshire firm told jurors he raised the alarm of the looming accident moments earlier.

Stoneworld Oxfordshire and G J Harris Engineering Services are both on trial facing one count of a failure to discharge a duty in relation to health and safety regulations.

Prosecutors at Oxford Crown Court claim that this failure led to one Stoneworld employee being injured by a toppling five-tonne Pellegrini wire cut saw that was being installed.

As the trial continued today the defence case for Stoneworld began.

From the witness box Robert Gregory - who runs a classic cars transport business adjacent to Stoneworld at Great Milton - gave his account.

READ AGAIN: A report of the opening of the case last week.

He told jurors that he saw the machinery being installed on the morning of November 9 2016.

Mr Gregory said he saw a man - later identified as Gerald Harris - of G J Harris Engineering Services, using a 'prybar' on the machinery in a bid to 'move it around.'

He told jurors he was 'concerned' at what he saw and he then raised the alarm with his son, who was on site with him.

He said: "I went on to speak to my son and said there is an accident about to happen there.

"Because there was nothing there holding [it], I saw someone moving around and I saw him prying it.

"I could just see something happening."

He went on to say soon after he heard a crash before people shouted the name 'Andy', and the emergency services were called.

Earlier in the trial jurors were told that because of the falling machinery one Stoneworld employee, Andrew Caffyn, who was walking nearby on his lunch break, suffered numerous injuries.

Both firms deny any wrong-doing and the trial continues.