"18. I next turn to consider the appeals made by …, [Mrs I's] two children. They are each under the age of 21, as I so find. The argument advanced by Ms Rogers is that they must each succeed in their respective appeals because they come within paragraph 7(1)(b)(i) of the 2006 Regulations. The issue then arises as to the true and proper construction of that part of paragraph 5 of the 2006 Regulations. It arises in this way. Ms Rogers submits that as [Mr C's] grandsons are his descendants and are under 21 years of age, they plainly come within paragraph 7 of the 2006 Regulations.