Police found over 15,000 indecent child images after a woman discovered sheets of paper advertising a porn site dumped in her garden.

Twins Stephen and Philip Davies were arrested and quizzed about photographs of victims as young as five, Worcester Crown Court heard.

One picture showed the head of a Harry Potter film actress superimposed on the shoulders of a 10-year-old girl being abused by a teenage boy, said prosecutor Ian Ball.

Recovered from Stephen Davies' computer in Howard Court, Hereford, were 15,326 images including 55 videos of boys and girls under the age of 13.

On his brother's mobile phone memory card were discovered 59 pictures of children.

Stephen Davies pleaded guilty to seven counts of making indecent photographs of children by downloading them from the internet.

His brother, who lives at the same address, admitted possession of indecent photographs.

Judge Andrew Geddes said the 32-year-old twins should be thoroughly ashamed of themselves and would get the "public humiliation they richly deserved".

He said Stephen Davies, who had a caution in 2002 for possession of indecent pictures of children, had not learned his lesson.

The judge gave both brothers three-year community orders with a condition they attend a sex offender programme.

They were also banned from working with children for life and must sign the sex offenders' register for five years.

Mr Ball said during the police raid in May a large quantity of child porn was found in the living room and bedrooms when a computer, an external hard drive and a mobile phone were seized.

Simon Burns, for Stephen Davies, said he was a sad, lonely man who had not paid for pictures which were widely available on internet websites.

He relished the thought of help to get to grips with his problems.

Lynette McClement, for the other brother, said all the pictures seized by police were thumbnails, used by the sites to entice people into going further and paying for other examples.