Mark(Blackwolf256) and I (ashley) Have made a list of the most big helpers, most are free so we feel it is our duty to list them and helpout. We included some other resources we thought were useful and interesting.
United Kingdom:
CEOP
Description: Child online protection agency, is made up of law enforcement agencies from all around the UK working together to fight child abuse online. You can also find help and advice about the topic, and get direct help if you or someone you know is in a similar situation.
Website:
www.ceop.gov.uk
ChildLine UK - Offers a wide range of advice and help.
Free Helpline: 0800-1111
Website:
www.childline.org.uk
Talk To FRANK - Offers advice & help specific to drugs.
Free Helpline: 0800-77-66-00
Website:
www.talktofrank.com
Think U Know
Description: loads of information on how to stay safe online.
Website:
www.thinkuknow.co.uk
Muslim Youth Helpline UK - Direct help for muslims in UK.
Free Helpline: 0808-808-2008
Website:
www.myh.org.uk
United States
National Runaway Helpline
Free Helpline: 1-800-RUNAWAY
Website:
www.1800runaway.org
Convenant House - Nineline
Free Helpline: 1-800-999-9999
Website:
www.nineline.org
Worldwide
Virtual Global Taskforce
Description: The Virtual Global Taskforce (VGT) is made up of law enforcement agencies from around the world working together to fight child abuse online. You can also find help and advice about the topic, and get direct help if you or someone you know is in a similar situation.
Website:
www.virtualglobaltaskforce.com/
Befrienders Worldwide
Description: We work worldwide to provide emotional support. We listen to people who are in distress. We don't judge them or tell them what to do - we listen. 31,000 Volenteers in 40countries. They have numbers for your specific locations.
Website:
www.befrienders.org/
Child Helpline International
Description: The most easiest helpfinder, lists all of them a-z, litterally choose your country and the help numbers are there.
Website:
www.childhelplineinternational.org/global.php
International
Australia
Kids Help Line AU
Free Helpline: 1800-551-800
Description: Kids Help Line is Australia's only free, confidential and anonymous, 24-hour telephone and online counselling service specifically for young people aged between five and 18.
Website:
www.kidshelp.com.au
More coming soon.
As we live in one country i'd be nice if you PM me(ashley) or mark(blackwolf256) any international numbers/links that you feel will be a useful addition to our list

We will list specific countries free numbers would also be good.