Thank you Simba for your response.

So to clarify my thinking then.
My children were not born in the U.K. and even though I am on a spousal visa (Family Route) with them as a dependent, they would not qualify unless I am settled?

The new changes to private life and the child concession is rather confusing and need some clarification please. My children and I arrived in the UK in October 2015 on a T2 ICT visa. I have subseqently got married to a British born national in 2020 and changed my visa to spousal and my children as ...