You can have your baby or child christened at any age but there are different forms of the service for older children and adults. Read more here.
There’s no specified minimum or maximum age for having a child christened.
When a child is christened, the parents and godparents will make promises on their behalf. Older children (perhaps around the age of 12) may be mature enough to make the promises for themselves.
Talk to your vicar about baptizing an older child and how this might differ from a baby’s christening service.
One of the first things you will need to do is be in touch with your local church. It might seem daunting, but whether you speak to an administrator, a friendly parent like you from the church, or the vicar, they will be glad to hear from you. Find out more about what you can expect when you make that call.
There is actually no minimum age specified for godparents, but if you’re thinking of having a young godparent under the age of 18, talk to your vicar first. This page explains more.