Closing arguments in Vincent Hamlyn's death crash trial

Closing legal arguments are being heard in the case of a doctor accused of causing the death of a motorcyclist by dangerous driving.

Kevin Morgan, 60, died after his bike collided with Vincent Hamlyn's BMW Z4 on the A449 in Newport in June 2014.

Anaesthetist Dr Hamlyn, 33, of Chepstow, Monmouthshire, denies the charge at Cardiff Crown Court.

Prosecutor Matthew Roberts told the jury both men contributed to what happened.

He said events were "set in motion by what happened at the traffic lights" when Mr Morgan's motorcycle came alongside Mr Hamlyn's car at the Coldra roundabout.

He claimed a "gauntlet had been thrown down and it was a challenge accepted by this defendant".

The prosecution claims both vehicles were "jostling for position" at the lights before racing each other on to the A449 towards Monmouth.

Mr Roberts said that at the point of impact, the motorcycle may have been trying to overtake the car as two lanes merged into one.

"At that point, Kevin Morgan may have had a higher degree of blame, but that doesn't absolve the defendant," he said.

Defence barrister, Michael Mather Lees QC, told the jury the prosecution's version of events were "not clear, credible or in anyway accurate".

"An inconvenient fact is this," he said.

"This is a quick car - he is racing a bike - he could outpace it - but he doesn't. Funny that. He's not using the maximum accelerating capacity of that vehicle or anywhere near it. It does not make sense."

Earlier in the trial jurors heard Mr Morgan suffered "catastrophic" head injuries when he came off his bike after "contact" with Dr Hamlyn's car.

The case continues.