Barry Rogers told police his grandmother Betty Guy was dead before he arrived in Johnston after receiving a telephone call from his mother, a jury heard today.

Rogers, aged 33, described as "b******t" claims by several women that in the years after the death of Mrs Guy he had confessed to smothering her with a pillow.

"Those conversation never took place. No way," he said.

Rogers, of High Street, Fishguard, and his mother Penelope John, 50, of  Union Terrace, St Dogmaels, deny murdering Mrs Guy at her home in Hillcroft, Johnston, in the early hours of November 7, 2011.

At first her death was put down to natural causes and her body was cremated at Narberth four days later.

But, it is alleged, over the years that followed Rogers made confessions to various people that his mother had fed Mrs Guy, aged 84, tranquilisers, sleeping tablets and whiskey and that Rogers had smothered her with a pillow.

The jury at Swansea crown court asked the judge, Mr Justice Clive Lewis, if they could watch and listen to the video recorded interviews of Rogers after his arrest in October, 2016, and they are being played today.

Rogers sobbed as he said he bitterly regretted delaying his departure from his home--then in Frome, Somerset--late on October 6, 2011, after receiving a telephone call from John saying Mrs Guy was seriously ill.

In the end he reached 140mph "s******g myself" that she would die before he got there.

"As soon as I was there so were the police, the doctor and the undertaker.

"I felt guilty. I should have left earlier and I would have seen her.

"My Nan was dead before I got there."

Rogers said he was not sure when he had last seen her alive.

"I tried calling, but I should have tried harder because she's not here any more."

Rogers began the interview by telling officers: "I want to start off by saying my Nan died of old age."

He said that after being told he had missed seeing her alive for one last time he drank three cans of beer and whiskey and port.

Officers put to him statements made by several people, including his former wife, that he had helped his mother to kill Mrs Guy.

Rogers, a former soldier, said he had killed someone in Iraq and would not do it again.

"I have done nothing wrong. One hundred per cent I was not responsible for her death."

The trial continues.