Changes to tenants`

Other

I have a tenant (single person named on tenancy). When the tenancy was created about 10 years ago the tenants daughter also lived with her. The daughter was at school/college at that time, the daughter still lives with her mum (the tenant). The daughter is now expecting a baby in October. I am happy for the tenant to remain on the AST as the sole tenant even though her daughter lives at the property and the daughters child will now live at the property.

Any general advice about this situation and any specific paperwork I should complete to notorise that the daughter (and daughters new baby, in due course) are living at the property.

Thank you