A man who downloaded more than 1,600 "truly depraved and sickening" indecent photographs of children over a decade has been jailed.

Mark Chapman, 58, was found to have 714 images and videos of the most serious nature, category A, on his computer, when his home in Nursery Close, Baildon, was raided.

In addition police officers found a number of extreme pornographic images, including animals, and a prohibited image of a child.

A forensic investigation of his seized computer also uncovered a series of Skype chats with others, where Chapman had shared three indecent videos of children, two of category A and one of category B.

They also found 428 category B photographs and 472 category C photographs on his Apple Mac and external hard drive.

Chapman, now of Kinclaven Gardens, Perth in Scotland, admitted all seven charges, which dated back to between 2004 and 2015, and was jailed for 16 months.

Bradford Crown Court heard from the prosecutor in the case, who described how police raided Chapman's home in May 2017, seizing the computer and hard drive.

Some of the indecent images had been encrypted and some Chapman had attempted to hide within files with innocuous-looking names.

The images ranged in date from September 21, 2004 and March 21, 2015, showing the length of time over which they had been downloaded.

Victims in the indecent images ranged from newborn babies to 13-year-old boys, the court was told. Some also included animals, such as a horse and a dog.

In Chapman's defence, the court was told that he did not share the images of the younger victims - it was only those containing older children that he shared on the Skype chat - person to person and not with a large group or multiple people.

Of the encrypted files, his barrister added: "They were images received through the post by DVD and the encryption was part of the DVD."

"It is right that some of the file names were innocuous."

He described how Chapman had been in a 38-year relationship and that his partner, who now knows about the images, remains supportive, in fact quitting his job as a teacher.

He said that the period over which the images were opened was lengthy, but that given the length of time the number of images he amassed was relatively low, adding that he only turned to them "in times of crisis".

In addition, he had not downloaded any images for around two years before the raid of his home in 2017 - so six years in total as of now.

He had already completed a Safer Lives Programme available in West Yorkshire and both he and his partner had given up their jobs as a result of his arrest and subsequently moved to Scotland.

"The defendant has taken very real steps to move away from [the internet fantasy world] and protect himself from future behaviour," he added.

The Recorder of Bradford, Judge Richard Mansell QC described the worst of the images found of Chapman's computer as "truly depraved and sickening".

He added that the lengthy period of time over which he downloaded the images and videos showed that his "interest in children and other extreme porn was well and truly entrenched".

But he said he realised this was now six years ago.

The judge added that Chapman's interest had succeeded to "feed this vile trade" but that his jail sentence would hopefully deter others.