Becky Watts trial - Day 11

Matthews told police he may have got his kidnap plan 'from TV', and he had plotted to carry it out to make Becky "more appreciative of life".

In two further interviews - in which Matthews was described as "sobbing" - he said come up with the idea to scare the teen.

He said he planned to make an excuse to his girlfriend Shauna Hoare and then drive to a "wooded area".

In his first interview after his arrest, on February 28, Matthews described himself as psychologically disturbed.

When asked by the custody sergeant, when he was booked in at Patchway Police Station, if he had any mental health problems, he answered yes, and said he was four things, "emotionally unstable, psychologically disturbed, a metrosexual and a neanderthal'

When asked to describe metrosexual, Matthews said:

He was then asked to explain neanderthal.

He said that he was a naturally stressed person, and told police:

He described himself as a paranoid person and admitted snapping at both Becky and his mum.

A Territorial Army member has said she thought Matthews had an anger problem, and would often "snap" while on training.

Danielle Rogers, who was a member of the TA alongside Matthews in 2006/7 told the court there were times he would worry her. She said Matthews would drive the pair to training, in Cardiff, and often take his anger out "on his driving".

She said it would never frighten her, but she was worried.

Another TA recruit said she believed Matthews was a "quiet nice guy", while his Squadron Sgt Major said he was keen and willing to learn.

The court also heard how Matthews learned about using cat litter to "absorb liquids" and "decontaminate" with the TA.

The jury has been told that cat litter - or Fuller's Earth - was found piled on top of part of Becky's torso inside a box in a shed.

Roy Kempton, who was Squadron Sgt Major of the unit in 2006 said training would have included camouflage, concealment, army discipline, and chemical, biological and nuclear defence, including decontamination.

Ms Rogers echoed the statement.

Former Grenadier Guard and TA cadet instructor Darren Thomas taught Matthews in 2000 at a detachment in Cadbury Heath, Bristol.

Mr Thomas said cadets would have been told about the use of Fuller's Earth - a powder in cat litter - in covering chemicals and "absorbing fluids".

Another housemate of James Ireland said he had a conversation with the accused in a pub, where he recounted what had happened.

Richard Whitton told the court Ireland believed he was moving items to do with a robbery, and thought he was getting around £5,000 for helping.

Mr Whitton told the court Ireland had said he had got into the work van and driven down to Barton Hill, where he "moved the stuff".

But, Mr Whitton said, once he had handled the packages his opinion changed to thinking he may be moving drugs.

He said at one point Ireland gestured with his hands as to how big the packages had been, holding his hands about a foot apart.

Under cross examination Mr Whitton conceded that during the conversation, at the Miles public house, in Avonmouth, he believed it was "typical Jamie telling one of his stories" in an attempt "to impress" him.

He said he had been sceptical, and the conversation seemed "unreal" to him.

A housemate of James Ireland says he chatted to him about "moving some stuff" the night after Becky's body was allegedly moved.

Simon Knight told the court that he had had a conversation with Ireland, known to his friends as Jamie, where he had told him one of his friends had had a phone call while at work asking them to "go move some stuff".

Ireland, he said, would "do anything for money" so agreed to help his friend. The pair took a van from their work, at British Areospace in Avonmouth, and drove to Barton Hill, Mr Knight said.

Mr Knight then recounted to the court how then started loading bags into the van.

When the job was done, he said 'the male' invited inside the address in Barton Hill, where they had a cigarette together, before Ireland went back to work.

Mr Knight told the court that Ireland would do "anything for money", so if someone had offered money to move things, he would have taken it at face value for the money only.

Under cross examination Mr Knight said he believed Ireland had never met the people he had helped before, and could not recall any details about them.