Children in the UK start school at 4 years old. Local council is required to provide a place for your child in one of the nearest schools. There may be several schools in the neighbourhood that you can choose from (if there are free spaces).
If you're planning to send your child to school, use these links:
Primary school (4-11 year olds): https://www.gov.uk/apply-for-primary-school-place
Secondary school (12-17 year olds): https://www.gov.uk/apply-for-secondary-school-place
You can home school your child, however please keep in mind that you will need to follow the national curriculum and submit reports as a child's right to education is protected by the British law.