Hi , do you have any reference for what you said ?
I found the following in the immigration rule, it looks like it requires both parents to have ILR...
https://www.gov.uk/guidance/immigration ... ly-members
(a) both parents are present and settled in the United Kingdom; or
(b) both parents are being admitted on the same occasion for settlement; or
(c) one parent is present and settled in the United Kingdom and the other is being admitted on the same occasion for settlement; or
(d) one parent is present and settled in the United Kingdom or being admitted on the same occasion for settlement and the other parent is dead; or
(e) one parent is present and settled in the United Kingdom or being admitted on the same occasion for settlement and has had sole responsibility for the child’s upbringing; or
(f) one parent or a relative is present and settled in the United Kingdom or being admitted on the same occasion for settlement and there are serious and compelling family or other considerations which make exclusion of the child undesirable and suitable arrangements have been made for the child’s care; and