Below is a list of organisations that can offer help and advice on the issues tackled in Panorama: One Click from Danger.
If you believe that you - or another child - are being groomed online or have had someone suspicious contact you online report this.
If you want to make a complaint that you - or another child - are being sexually abused contact your local police and/or social services or Childline: 0800 1111.
If you are concerned about yourself or another child or young person and want to talk to someone, find an adult that you trust to talk to. If you are not able to do this then you can call in confidence, Childline - 0800 1111. Or visit the there4me website.
CEOP says young people online must understand that using the internet as a channel to distribute sexual material of themselves in return for payment could put them at risk not only from sex offenders but potentially lead to prosecution for criminal offences.
For general advice on how to keep your children safe online go to the parents section of the thinkuknow website.
If you are concerned that someone is grooming your child online report this to the Child Expolitation and Online Centre (CEOP) at:
For parents and adults
If you know of anyone who is sexually abusing a child, report this to your local police and/or social services or the NSPCC Helpline 0808 800 5000.
To report a concern or talk to someone about a concern you may have about a child who is potentially at risk of harm call the NSPCC Helpline - 0808 800 5000.
If you have concerns about someone whom you believe has a sexual interest in children call, Stop It Now - 0808 1000 900.
If you have concerns about your own behaviour and/or inappropriate sexual feelings towards a child or children. Stop It Now - 0808 1000 900.
If you have encountered child sexual abuse images online, you can report this to the Internet Watch Foundation.
If you want to report personal historical child sexual abuse you can call the NSPCC Helpline - 0808 800 5000 or contact your local police and/or social services.
If you seeking support for personal historical child sexual abuse contact the National Association for People Abused in Childhood - 0800 085 3330. Or visit the Pheonix Survivors website.
Panorama: One Click from Danger, Monday 7 January 2008, BBC One 8.30pm.