If you are estranged from your adult able-bodied child, it is tempting to think they will not be able to bring a claim against your estate as they are not financially dependent on you, and you may not have had contact with them for some time. However, the court in the case of Illott v Mitson has shown that an adult child can bring a claim under the 1975 Act.
The court will consider several factors, such as the size of your estate, your relationship with your adult child and your child's needs when they make their decision.
Someone is who not your biological child may also claim that you have treated them as your child.
In comparison to when a spouse brings a claim, the potential award is limited to what would be reasonable for your child to receive for their maintenance. Although there is no legal definition for "maintenance", this could be what would be reasonable for your child to live on.