I came across this-
www.bailii.org/ew/cases/EWFC/HCJ/2019/43.html
Caveat- I may have misunderstood some of this as I am not familiar with the law.
My understanding of the above situation is that a married couple traveled to a foreign country and employed a surrogate mother who gave birth to twins.
The twins are biologically the children of the husband and the surrogate mother.
They returned to the UK and sought a parental order. When the court reviewed the order they couldn't make it because the couple were not able to provide proper evidence of the surrogate mothers consent and that they had only paid reasonable expenses.
The court asked for proper evidence of the above.
The couple said no and withdrew the parental order.
They have, at some point prior to this ruling, been granted a residency order (or whatever it's called now).