A Bradford man is behind bars awaiting a long jail sentence for sexual abuse of boys, while two other defendants have admitted linked offences of child pornography.

David Smith, 30, of Stott Terrace, Eccleshill, was warned by a judge today to expect a “substantial” term of imprisonment after he admitted a catalogue of offences involving the abuse of a 15-year-old boy, making, taking and distributing indecent photos of children and voyeurism.

Accused with him were Matthew Lomas, 29, of Burnstall Crescent, Menston, and David Naylor, 26, of Finchale View, West Rainton, County Durham. They were remanded on bail after pleading guilty to child pornography offences.

Smith, who is being held in Armley jail in Leeds, will stay in custody until all three men are sentenced at Bradford Crown Court on June 19.

Smith admitted four offences of sexual activity with a 15-year-old boy, between August, 2011, and December last year, and one of causing the child to engage in sexual activity.

He pleaded guilty to making 138 indecent photos of children and nine indecent moving images of children.

Smith further admitted taking indecent photos of a child on December 5 last year and three charges of distributing indecent images of children.

He also pleaded guilty to two charges of voyeurism.

He denied one allegation of sexual activity with the 15-year-old boy.

Naylor pleaded guilty to five offences of possessing indecent photos of a child, on or before February 18 this year.

The images ranged from level one, the least serious, to level five, the highest level of seriousness. The court was told he pleaded guilty on the basis that Smith sent him “one or two images” and then more that he ignored and were unasked for.

Lomas pleaded guilty to five charges of making an indecent photo of a child, on or before January 30 this year. The levels of seriousness ranged from one to to four.