Definition of “child” in UC for bedroom entitlement.

The wording for bedroom entitlement in Reg B13 HB Regs is similar to that in para 10 of Sch 4 UC Regs. And both allow a room for “two children of the same sex”. In HB a child is defined in Reg 2 as “a person under the age of 16”. I have been looking for a definition of child in the UC Regs and I can’t find one - Reg 2 goes from “carer element” to “child disability payment”, Reg 5 is very helpful if you want to know what a “qualifying young person” is, and the definitions in Para 2 of Sch 4 start with “exempt accommodation”.

It feels like this is a Friday afternoon problem - I must be missing something. Please can somebody point me in the right direction?

It’s in s40 of the Welfare Reform Act 2012, “a person under the age of 16”

Thank you so much. I feel like I can finish now and enjoy the weekend.