The heir to a £230million pie company fortune has been found guilty of murdering his best friend on Christmas Eve.

Dylan Thomas, 23, stabbed William Bush, also 23, in the rented home the pair shared in Llandaff, Cardiff, on December 24 last year.

Mr Bush was found dead in the newly-built house, owned by Thomas’s grandfather Sir Stanley Thomas, a Welsh tycoon behind a business empire including Peter’s Pies.

Thomas, who is being treated for schizophrenia, was found guilty today after a week-long trial at Cardiff Crown Court.

He had admitted manslaughter by diminished responsibility but denied murder ahead of the trial.

Sir Thomas, whose net worth was estimated to be £230million in 2013, sat in court throughout the trial.

‘Loner’ Thomas struck after his only friend Mr Bush told him he was planning to move out with his girlfriend Ella Jeffries.

He had been staying at his grandmother’s house in Rhoose, in the Vale of Glamorgan, the night before he attacked Mr Bush. He told her he wanted to go back to the house he shared with his friend to walk his dog, Bruce.

His grandmother sat in the car while he went inside, before returning minutes later, banging on the window covered in blood. She carried out CPR on Mr Bush until the paramedics arrived.

Mr Bush sustained 37 stab wounds in the attack, including 16 to the neck, and people on the street described ‘horror screams’ from inside the house.

The jury heard that, before going back to the house, Thomas had searched online for anatomy of the neck.

Thomas had cuts to the palms of his hands, which he told police he received while trying to defend himself.

The two had been friends since they were about 13, having met at Christ College Brecon, a private boarding and day school in mid-Wales.

Thomas was described to the jury as being ‘something of a loner’ while Mr Bush was more outgoing and active. His brother called him a ‘loyal’ friend.

Thomas appeared before Cardiff Crown Court on Thursday by video link from Ashworth Hospital Liverpool, where he is in custody and being treated for schizophrenia.

He was wearing a navy blue T-shirt with short black hair, his hands clasped in front of him, looking impassive, as the verdict was read.

Cries were heard from the public gallery as the verdict was read out.

During the trial, the jury heard from Dr Panchu Xavier, a consultant forensic psychiatrist at Ashworth, who said the defendant could have been having a psychotic episode during the attack and for ‘up to six months before the event’.

The jury also heard Thomas had been arrested for breaking into Buckingham Palace a few months before the attack on Mr Bush.

Thomas told officers he was looking for ‘energy fields’ between the palace and Cleopatra’s Needle, an obelisk in central London.

He was rugby-tackled by an officer after he told them he was ‘over now so you may as well show me round’.

The jury also previously heard that in the months leading up to the attack Thomas had confessed to his friend that he had thought about killing him.

Mr Bush’s girlfriend, Ms Jefferies, told the court her partner had barricaded his door, fearing Thomas would enter his room.

Mr Bull said that the prosecution suggests the motive of the killing ”is hidden”, adding: ‘Only two people can tell you if there might have been a motive.

‘One of them is dead and the other, for reasons known to you, has not been able to give evidence, so don’t speculate.’

The prosecutor told the jury: ‘To all intents and purposes, they were good friends and that’s one of the mysteries of this case, we don’t know what caused Dylan Thomas to act in the way he did.

‘Whether it was a feeling of loneliness or resentment, despite having everything in life, Dylan Thomas had achieved very little.

‘Whereas on the other side of the coin, Mr Bush having come from very little, achieved great success in his personal life.

‘He had found a new job, albeit delivering newspapers, in a stable relationship with his girlfriend, and were looking to buy or rent a house.

‘Everything in his life was on the up where it might have been perceived in Dylan Thomas’s case, life was on the downward spiral.’

Thomas was branded an ‘evil, manipulative liar’ by the family of Mr Bush today.

Catrin Bush, speaking outside Cardiff Crown Court on Thursday, said: ‘We are relieved to hear today’s verdict of murder. We would like to thank the police, CPS, Mr Bull KC and Mr Wright for all their work and support over the last 11 months, and we are thankful that all of this hard work has led to the correct verdict today.

‘My family have been completely devastated by the brutal and senseless murder of our much loved Will, words cannot describe the impact this has had on our family. However, it is not just us who have lost a son and a brother, Will’s girlfriend, friends and extended family have also lost someone who they loved very much.

‘Will was innocently getting ready to return back to Brecon to spend Christmas with us all when the attack took place, and instead of Will arriving at our door for dinner on Christmas Eve, it was Dyfed Powys Police to deliver the beyond devastating news.

‘We cannot even begin to comprehend the fear and suffering that Will endured on Christmas Eve last year, we will have to live with the hurt, grief, anger and upset for the rest of our lives. Dylan Thomas is an evil, manipulative liar.

‘Throughout this process, we have seen no evidence of any remorse or taken responsibility for his actions that day.

‘We can only hope that he will never be released back into the community.’

After returning their unanimous verdict, trial judge Mrs Justice Steyn thanked the jury for their work over the last week.

‘There are a number of things I wish to say at the conclusion of this trial,’ she said.

‘First of all, I would like to thank you for your dedication, commitment and patience in carrying out this extremely important public service in sitting on a jury.

‘You have very obviously listened to the evidence with care and taken your responsibilities seriously at all times.

‘You have heard deeply upsetting evidence during this trial and you obviously had the support of each other during the course of the trial.

‘The juror notice form that you have provides some guidance for jurors who after the trial is over may feel upset about anything to do with the case and wish to speak with someone about this.

‘On top of that there is no rush for you to leave this building and you will be given all the time you need to gather your thoughts before you do so.’

She added: ‘Now this case is over you can discuss what happened here in this courtroom with anyone but you must never reveal what was said or done in the privacy of the jury room.

‘This is absolutely forbidden by an Act of Parliament. Your deliberations when you were trying to reach a verdict must remain private.’

Speaking outside Cardiff Crown Court on Thursday, Detective Inspector Rebecca Merchant, senior investigating officer in the case, said: ‘William Bush was a much-loved son, brother and boyfriend with a bright future ahead of him, which included moving in with his girlfriend and starting a new job.

‘On December 24, 2023, as he looked forward to spending Christmas with his family and girlfriend, he was killed by someone he regarded as his friend, having done nothing to warrant the brutal violence inflicted upon him.

‘Our thoughts today, as they have been throughout the investigation, are with William, his family and girlfriend.’

Detective Merchant paid tribute to the professionalism of the police officers and emergency services who tried their best to help Mr Bush.

Thomas, who was remanded into custody, will be sentenced on December 16.