A mum has apologised to the family of the man she stabbed and killed.

Natasha Capell admits manslaughter but denies murdering Kyle Byfield at her flat in Banbury in April this year.

A jury of seven women and five men heard they had been drinking and taking drugs when they went back to her home in Jubilee Court with Jake Orwa.

Alan Blake, prosecuting, said Capell saw red when the pair refused to leave and she grabbed a 12-inch kitchen knife and stabbed 23-year-old Mr Byfield in the chest.

He was rushed to hospital but died later that day.

Giving evidence at Oxford Crown Court today, 26-year-old Capell wept as she denied murdering him.

She admitted she was "no angel" and said she had been left devastated by Mr Byfield's death.

The mum-of-one added: "I feel so guilty I have taken someone's life.

"I feel terrible for his family, especially his mum.

"Every day I wake up and the first thought that comes into my head is Kyle's dead. Then I wake up in the night and I think it's all a dream, a nightmare, then remember that it's real."

Turning to the public gallery with tears running down her cheeks she added: "I wish I could swap places with him.

"I wish I could change it but there's nothing I can do to make things right.

"I'm sorry."

She told the jury she remembered grabbing the knife from a pouffe in her living room and waving it around trying to get the men to leave.

But Capell denied saying "I'm going to f****** stab you" and said she struck Mr Byfield as he tried to take the knife from her.

She added: "I remember him coming towards me and I struck him.

"I just wanted him to get away from me. I didn't realise the force that I had done it with."

The trial continues.