Child tax credit is paid to anyone who is responsible for a child who is under 16; or is under 19 and in full-time education; or is aged 16 or 17 and has registered for work or training with the Careers Service or Connexions Service.
In order to make a claim you can ring the Taxcredits Helpline on 0845 300 3900, by filling in the claim form TC600 or online at the taxcredits online website.
Child Tax Credit is paid in addition to Child Benefit and the amount you will receive depends on your circumstances and incomes. Basically the less income you and your partner receive jointly then the more Child tax Credit you will be entitled to. If your child is under one or is disabled then the amount you receive will be higher.
For more information and help with Tax Credits visit their website.