Croydon needs foster carers Ever thought about becoming a foster carer? Find out more about what it's like and the benefits of becoming a foster carer with Foster Croydon. The foster carer application process The process for applying to foster a child in Croydon. Transferring from another foster agency Transferring to Foster Croydon from another fostering agency. Private fostering Private fostering is when a child under the age of 16 (under 18 if disabled) is cared for by someone who is not their parent or a close relative.